Personally, I wasn't very inspired by the vast majority of the "game jam" stuff. But, hey, that's just me.

Anyway - why isn't it all in, right now? Because the game jam stuff was thrown together by individuals or small teams in a week. Yeah, they may have "worked" for that video, but that doesn't mean that they weren't crashing left and right the rest of the time, causing other parts of the game to explode, not implemented rationally, etc. To actually bring them up to the level of "real features" could take anywhere from a little work to a vast amount. Or be not feasable at all.
So, no. They can't just snap their fingers and have stuff appear. That's software development for you.
