GS doesn't use plugins for anything which is a good thing I suppose, but it reduces the time frame on branching out, I respect that they are trying to go native code but the features are just taking so long for a large team.
I'm happy to stick to use the latest devices if I can make the best possible game. :)
Scirra has so many great features I don't see anywhere else. Scirra and iStencyl are my favs. But I believe scirra is the only one with Plugins!