Here's how it should have went.
Sega should have given us a literal Sonic Ultimate Collection by putting Sonic 1, 2, 3, 3D, Knuckles, Advance 1, 2, 3, Spinball, Mean Bean Machine, Knuckles Chaotix and Sonic CD on one PS3 disc with unlockable extras like the Game Gear titles.
Streets of Rage should be remade in HD. There are already fan-made Streets of Rage games out there with awesome remixed soundtracks. An epic HD remake with the original Streets of Rage 1, 2 and (the Japanese version of) 3 as extras would make a fine stand alone PS3 game.
Golden Axe 1, 2, 3 and the terrible RPG should have been unlockable extras on the recent Golden Axe: Beast Rider.
With the exception of coveted titles like Shining Force the rest in this collection are embarrassing and forgettable. Super Thunder Blade is as godawful as it has always been and time hasn't been kind to many of the others.
If Sega/Backbone Entertainment were going to quickly rush 40-ish Genesis/Mega Drive games onto a PS3 disc then why didn't they just make a bit more effort and chuck in EVERY other game that was released on this console as they'd easily fit onto a Blu Ray disc.
But that didn't happen I'm afraid, so for the moment we'll have to stick to emulators.