Online: This is something that is indeed needed at some-point.
3D: I don't think much more is needed than what is already there. Perhaps more primitives for the 3D Box but really, Construct is supposed to be a 2D program, so loading fully animated models should be saved for a Construct 2. I do hope mesh distortion is continually supported however, as that has many practical uses in 2D.
Export: I can understand a Mac export feature, but I don't really think it's a huge factor. Macs are generally used for creative purposes and not gaming, despite some changes over the years to make that aspect easier.
Gamepad: This is more of a novelty I think. Most people don't use a gamepad, despite what you might like to believe. Perhaps down the road?
My 4 cents.