Well i think what you say is related to another thread
http://www.kittycats.biz/forum/showthread.php?tid=3033 where i picked up on the fact that too often a new recessive fur is hiding behind another closely recessive e.g. Balinese behind Aby BS in this case. Most people seem to think this is better value than the shown being a Silver Tabby for example, when in fact shown Tabby allows much more scope for getting at the Bali much faster. For me it's a dead end and i'd never buy just one kitty like this to try get at the fur.
At the time i started trying to get other eyes into my flames all i had to work with in 9T was Blacks so i took a chance with them, got porcelain and flame together and was sure that different eyes would pop out sooner or later so with a few sibling breeds i'd reach my goal sometime.
I know this isn't the surest way of going about breeding out the traits i want but i like to vary my methods and although i do mostly use the systematic logical method you describe it does take time and i like to dabble in pot luck breeding too, it makes for more fun and is faster if i get lucky. I could've use an 8T smokey too but it meant waiting 2 weeks after opening and by then the project wasn't important enough to go through all that.
And like i said, i don't really need these 2 pairs anymore as i have what i need now, it's just stubbornness and interest to see if they ever give me anything else but Caramel.
But anyhow yaay for 9T Dom kitties, they are often indispensable in a breeding project.