Streets of Rage (SoR Remake is gdlk though)
Bushido Blade
Legend of Dragoon
Scud
Super Street Fighter 4 : Arcade Edition v.2012 
There was this PS2 game called Sky Gunner. I loved the shit out of that game. I would love a sequel to it.
Bayonetta, Sonic Battle, Megaman Legends 2 cries, Sonic 4.
A Digimon World sequel that plays like Digimon World 1. DW2 was a good game but it was completely different. DW3 and up were okay I guess but, again completely different.
Skies of Arcadia
I was gonna say Bayonetta 2 but I’m pretty damn sure that shits gonna happen so I’m not gonna sit around hoping for it heh.
Co-sign on Legends of Dragoon.
Panzer Dragoon Saga.
Valkyria Chronicles on PS3. Fuck that PSP shit. The games on PSP are still good, but doesn’t come close to the PS3 version.
Chrono Trigger, 'nuff said!
Eternal Champions
Darkstalkers
Elevator Action Returns
Advance Wars
Guardian Heroes
Night Slashers
Battle Circuit
In terms of games that never got sequels or weren’t a sequel themselves:
Eternal Ring
Highlander: Last of the MacLeods
Metroid Prime Pinball
Monster Party
Space Griffon VF-9 (I believe japanese dreamcast title was more of a remake)
Decapattack
Last Alert
Lords of Thunder
Guilty Gear
Psychonauts
Guilty Gear
Psychonauts
Guilty Gear
Psychonauts
A sequel to Lunar 2 or a re-release of Lunar 2.
Lunar 1 got released way to many times.
Blood Roar
Sonic Adventure 2: Battle
Dragonball Z: Burst Limit
Sengoku Basara: Samurai Heroes
Devil May Cry (a Sequel, not a Reboot)
Fuck Shenmu, that’s what Yakuza is for.
gates of thunder
lords of thunder
ninja spirit
secret of mana
guardian heroes
nightshade
axelay
nes godzilla (not godzilla 2 or super godzilla that sucked)
shenmue 2
hahahahha i came in just for that.
Now, if you’ll excuse me, I must continue petitioning Capcom for a Vulgus 2!