It's a legitimate question, IMO.
My car runs about 11:1 at WOT so I'm not saying that's the wrong approach... but I see no problem with questioning assumptions and investigating alternatives.
One of the guys who mentored me when I was getting started with tuning swears that 12:1 is perfectly reasonable in Subarus. He tunes with less timing than those of us who run 11:1, of course. He just doesn't talk much about this on NASIOC because NASIOC isn't friendly to people who don't adhere to conventions.
Personally, I'm just too chicken. I'm satisfied with my power, and running a 30R on a stock longblock is already tempting fate quite enough, thanks.