Video implementation etc.. Plugins sounds like a Powerful option.
GS doesn't have that. However the native publishing, I don't think people have had all that many problems.
I read on the Scirra facebook page that someone published their game and it was all good and after about a month it started breaking down which really doesn't make sense to me.
I would be happy if I could get games working on i4S onwards with Game Centre stuff. (C'mon, majority of people love their high scores.)
I think I asked this before, but does anyone have any videos of a C2 game that has a single scene PACKED with the lots of things happening at once? I checked out MortarMelon, really nice project, but I feel if they couldn't fit more in one scene (purely for RAM reasons, amazingggggg looking game.) I get a bit concerned.
I love having lots of Animations and various characters all doing something at once.
Which is also something GS CAN NOT handle.
GS Does not have custom polygons or joints either, that is another thing about Scirra that I love.