My only issue with the construction of this post: "Each buyer that today 71,000 L paid for a Balinese, threw his money out to the window, because in one month this cat is only worth 500." I don't believe this person should have been publicly outed in this post and used as an example of what you deem was a buyer throwing his or her money out the window at Ifoni's auction. Beyond the price paid, you can't be sure of the details behind his or her purchase to begin with.
For instance, is it therefore a waste for me to spend money on my beloved (and notorious) collection of 60+ Chateau Cream & White 1 kitties I hoard because I love and adore this fur so much, just because I don't make any profit off of this favorite breeding project? I don't sell these kitties and even if I did, I'd be "throwing my money out the window" through your perspective because there's no way I'd make the money back on the kitty food and milk spent to groom and tend to my lovely army of cream & white 1 that don't fiscally benefit me whatsoever - they only bring me happiness and I'm content with the price I pay to keep them (no matter what price paid on food and milk, I'd keep these kitties over any others), so you have to understand why that segment of your post slightly irked me as someone who spends money "thrown out the window" in terms of not receiving any profit back and the kitties' values going down as days go by in your eyes.
Individuals can do with their money as they may like, just as you can with yours. Regardless of the market incentive to purchase the cat in question (I don't want to debate estimates on how much that kitty may be worth in a month, as this is neither what this post is really about nor can we accurately predict the value), perhaps the Balinese Seal Lynx held a special place in that person's heart and reminded them of a childhood pet, or maybe they wished to have lovely traits on it and this Balinese proved priceless because it matched their criteria for getting started with a project, perhaps they were impatient and it sated their anxiety to get in on the Balinese craze. Perhaps they're a prominent shopkeeper who doesn't see 71k as the same lofty number you do, 71k is merely petty Lindens. I know if I personally saw a kitty that looked exactly like my real-life one, I'd jump all over it and pay any price to have my virtual kitty, because it's worth it to me and the market has nothing over my sentiment toward the kitty so I'd be willing to spend the money for it. Everyone has different reasons for making purchases and thus kitties may hold different values in different people's eyes as a result, not everyone buys an expensive kitty (or any kitty at all) for sheer investment and future profit purposes. Even if so, you shouldn't out someone like this in a post and dub their purchase basically a waste, that's really unfair to both the breeders of the Balinese witnessing the craze over this breed and to the buyers who wish to obtain one and have to offer with others, thus reaching this current market price.
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Back to my thoughts on your proposal as a fellow breeder and player in the secondary marketplace we rely so heavily on:
As far as your suggestion, I don't believe your proposal will mend the issue in the long run, the same issue will appear and appear again. Everyone wishes to have recessive kitties, how else would furs be pulled so easily among other traits? It's lucrative and the recessiveness/rarity of a kitty sparks allurement in every individual, it's human nature. Of course, aesthetics play a role in kitties too and kitties with fun, pretty traits will always hold a place in people's hearts.
It is and will always be the buyer's right to pay any price they agree to and shouldn't be critiqued for it "threw his money out the window," I don't think it was right to add this silhouette of a person to your post, including a subjective viewpoint with loaded words to express your discontent with the price and what you predict will be the market value in a month. (The 500L price you deem the Balinese in a month is quite a stretch too in my opinion, even blacksilvers which came out around ~240 days ago are still worth 5,000L at worst to my knowledge) I also don't believe that the market can be predicted as you really don't know what will happen, nor do I believe a new slate of starter KittyCats while making the ones we currently have projects with unable to breed, is the wisest idea. While it may cause heavy hearts for breeders attached to their projects to be stripped of their ability to breed the current kitties and temporarily fix the situation with the wide array of new starters, it's no solution for the KittyCat's market in the long term with the same issues of recessiveness/rarity being in higher demand over and over again.
A re-introduction of KittyCats with a fresh slate of starters won't fix any problems - it's much like a MMORPG, plenty of MMORPGs (especially F2P ones) have server wipes because the economy was out of control with rare items from boss drops, everyone wanted the rare items so everyone farmed for these rares or tried to get it by any means they could. By wiping the servers and stripping the players of their characters and objects obtained, sure there wasn't as many rare items at first, but eventually over time they will add up and the MMORPG's servers' economies will be in the same rut as before. Something else, something new and innovative needs to be done to change the market and starting over with a new line of KittyCats that are incompatible with the current ones won't do anything for the KittyCats long-term. Rarity and recessive traits seem to prevail in the market (among every other market I can draw parallels to in any way) price-wise although there are exceptions such as aesthetics and this won't change unless something else changes with the KittyCats mechanics or with human nature to desire what isn't normally obtainable.
From what I've heard around the community when asking seasoned breeders and an auctioneer who happened to be here at this very time last year, there too was a market issue and it fixed over time. Markets will continue to rise and fall with the introduction of new traits (And yes, the rarest and most recessive will always be the most alluring, as upsetting as it may be to those like myself who are unlucky at discovering new traits. It's merely of our nature to want what not many others can have/discover/afford, among any other reasons to wish for these kitties that may cost a pretty penny.) and I've been given advice by the individuals who were here during this time to not worry as I specifically asked them this question about this very issue. Hopefully this proves to be the case again.
(Sorry for the long wall of text, this was an interesting suggestion and allowed me to reminisce on parallel suggestions that turned into reality on other platforms I've played market minigames on.
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Edit: The beginning of my response reflects a segment of the OP's post that is now omitted, so I apologize for any confusion. Nonetheless, it still ties into the issue regarding the market and the prices individuals are willing to pay per KittyCat, so I'll keep it here. Kitty hugs!