How about creating a list of possible in/excludes with some additional info per item what it would eat in ROM space, if it eats RAM, clock ticks, battery life, clutters registry and so on. Then we can all just vote:
1 in, 2 out, 3 in, 4 in and so on. If lots of us would vote you could just add up the average wish list and bake the most popular ROM ever.
I believe I'd love to see a ROM with Word, Excell, PPT left out. The 3D Cube flash Touchflo clone looks like an appealing replacement for that space, but only if it's stable, doesn't drain my battery and doesn't slow my Hima down.
I agree that that would make it far from a clean ROM, but for me a "clean" ROM is one that doesn't come full of stuff I never use. IMHO you can also throw out the standard games, sample pictures and such crap. But tiny tools and utilities like a registry editor, over/underclocker, personal data backupper in in in please.