I second the DMC-style game. Something along the craziness of MGR Revengeance and depth of DMC4, but that's just crazy to dream of doing alone.
Currently I'm making a game that imitates Telltale's point and click approach, but with more player freedom of exploration and not just cutscene after another with only freedom of choice. Sadly this project isn't made with Scirra2. I'll start making my own fighting game after I've done a portion of my current project. The fighter/beat em up will have a rather different style, combining arcade beat em up's style with Diablo 3 with hotkeys for skills that you also can combo. Also constant movement. Either you move, jump or attack. There are no pauses, and there will be scenarios where you rack up points just by running through waves of weak enemies on high speeds.
I'll go back to dreaming instead of doing.