Games in Need of a Sequel or Reboot

[Burning Typhoon]

Marvel Vs. Capcom 3
Megaman Powered Up 2
Megaman Legends 3
Zone of the Enders 3
Tekken TAG 2
Duke Nukem: FOREVER-- Game's taking forever to be released.
Jak 4
Speed Devils II
Megaman X9
Megaman 10
Marvel Vs. Capcom HD Remix
Sonic the Hedgehog 4

I don't think any game in that list need an explanation.