TypeScript coding; More Monaco improvements; Debugger improvements; Bug fixes.
For example, I like 3D features in C3, but honestly i wouldn't like if Scirra focused too much on improving it, because I would much more prefer for them to focus on 2D stuff, because engine is obviously highly 2D focused. But on the other hand a lot of people are angry at scirra for not making C3 into full-fledged 3D game engine.. that is pretty weird to me.
And yes, I was also frustrated at times, but then sooner or later, Scirra sorted those things out. And a lot of problems were fixed and features added. So yes, being patient is the key there.
2/2
I think you're right, it's just a matter of opinion. In fact even if they work on improving 3D things, I guess some people will complain because they prefer to focus on 2D, or code.
Thanks for your answer!