Well, if I'm getting what you all mean, it sounds like we need to make a game that would be a bit of a "Flagship" of sorts. SGDK1 had games like "Rolly the purple ball who goes around putting other balls in places so he can get energized to reach the next level. (but you can just call it Rolly for short.) Although it was short and relatively simple, it was a very nicely made and fun game. That was one of the things that made me use this tool in particular.
So, how about we all try and think of what kind of game should be made. Since RPG Maker has RPG's covered and GameMaker does most other things, I'm going to suggest a big multiplayer game should be built. I don't mean another MMO or a Web Browser game, I mean something using split screen and maybe head-to-head internet play, something like what you'd see on consoles that everyone loves. It would set SGDK2 apart from some of the other game creators, at least.
Well? Sound any good?