We can't argue whether or not Stencyl
seems limited to fan games, because that's a matter of opinion. The fact is, according to the Stencyl team, Stencyl isn't limited to fangames, since you can import your own graphics and define how the game functions. Sure, they could be lying about it all, but there's no way to argue about that either, since you can't prove them right or wrong. The only thing we really have to go by is their word. I'm simply reporting on what they have said.
The forum says it has a program where member make resources
They plan to create a site/area for resources, called StencylForge.
they won't be provinding many resources besides the kits.
I believe Jon said, "There will be some generic resources that are suitable for acting as placeholders for games. Of course, it's not recommended that you ship your game with them since it'd look too generic." He never commented on the amount of resources they would include.
Also, there's a new topic in the FAQs.