Thank you for that last part, or else I'd have to yell at you a bit.
CF and Peach are some of the... worst examples of what you could've used. Their usage wouldn't really change without MK. What WOULD change is you would see more Marth, Dedede, and ICs. Basically you'd make the lower top tier characters better, making the lower tiered characters WORSE, considering a lot of characters have more issues with these three than MK himself. Some characters like DK, Mario, and Luigi would plummet because nobody can beat Dedede with them, projectiless slower chars just get 8:2'd by ICs. Shit like Falco, Snake, and Diddy still are good because they can zone out the rising top tiers from an MK ban, essentially banning MK makes other top tiers better and every single low tiered character worse. MK has good match-ups against every single character, but.... I don't think a single one is worse than getting 3:7'd by MK. He has the best average, but he doesn't cause the worst nightmares for ANY character.
I didn't read Steel's post, but I'll assume it was an MK rant. MK is easily the best character in the game, but he's not even on a tenth of the level of stuff like SFII Akuma or Ivan Ooze. Basically after how badly the initial MK ban attempts went, BBR basically shut down any idea of banning MK forever- and he has only gotten less centralizing from then.
That and people hardly give a fuck about Brawl on Smashboards anymore. Its all Melee and Brawl hacks over there now. Not even Mew2King, the, well... king of Brawl enjoys it anymore.
/Smashboardsfag