Gave it a crack already, and it was awesome. It's got mad amounts of hard work; it still feels like a Streets of Rage game, but it is including multiple selectable characters (including Adam plus a few secret ones), redone soundtrack, redone levels, extra visual effects like transparencies, optional redone particle effects it seems, visual filtering, joypad support, unlockable extra mini-games including a freaking volleyball one, variable paths, bike chases (don't ask), 2-player coop, CPU-coop, what looks like leaderboards, etc.,...hell, there's even a level editor, from what I can gather--yes, a freaking level editor to make SOR levels... ...and a shop to buy stuff, kinda like MvC2, I think.
It does have a few odd shortcomings (it has crashed twice on me, but it stays mostly stable) but nothing that should be a deal breaker for anyone that would've been interested in a cool retro beat-em up.
Honestly, what the guys at Bombergames accomplished is nothing short of insane. It was a labor of love through and through, and a massive step forward from the previous version (which I also had the joy of playing at one point). Had the game have SEGA's marketing push, it would do freaking wonders for their reputation. The whole thing is that good. It, imho, easily blows away current professional offerings like Megaman 9 or 10, or any other retro inspired games these days, and this guys coded the entire thing on their own.
How hard can it be for SEGA to do the same as western companies? Take Bethesda for example, they left a bunch of tools laying around for gamers to fuck around with, and they're not suing anybody.
I understand if they want a cut of the whole thing, but the best way for them to do that would have been to just let the whole thing play out as it did, hire the devs, make a deal, and release an expanded, more polished version under their stead. Instead, they soured everyone's view of the whole thing.
What a sad waste...