I agree that these would make the toy/tool a lot better, but it does seem like he built a game engine that starts you off with a game. If that's right, then it would take a while to implement much of these.
This might be a faster way to get there: if there was a way to bridge Platformer Toolkit to Unity and show the underlying code, it would let us reverse engineer his process and add more useful features in a shorter amount of time.