All these Streets of Rage requests and there hasn't been a new game in over 20 years. I want to sit on the couch with my brother and beat up street punks while listening to sick techno beats damn it.
Contra & Castlevania (The real Castlevania, not that God of War/Shadow of the Colossus clone Lords of Shadow). Obviously the issue is that Konami only seems interested in making Pachinko machines and also game developers don't want to make 2D sprite based console games anymore cause they actually take more work than 3D games. I would even take the 3D models on a 2D plane route, although I still prefer sprite based for 2D. It's unfortunate cause the last few Contra games (Contra 4 on DS, Rebirth on Wii and Uprising on XBLA/PSN) were all really good.