I don't want to see Construct 2 move to 3D until 2D games stop being commercially possible, which may be never.
C2 is the best 2D games authoring platform I have worked with to date. If I want to move to 3D, I will use Unity (which is not very good for making 2D games, by the way) or some other engine dedicated to 3D.
I agree with this statement. I tried Unity for a few smaller 2d games and it really isn't good at all for that, but Construct is amazing.
I think that Game Maker handles both 2d and 3d though?
Anyhow Construct is now my go to engine for any 2d game related project, I love this thing!