One thing I learned while using C2 was that what I thought was workaround were often the fact I wasn't using it properly.
I found ways to properly optimize by observing how real code is written and asking programmers what are the best practices.
When I did spikes as an example, was actually quite easy.
Organization has never been a problem, I keep everything separate into either different sheets or into dictionary.
For animations thought, I don't know how useful would be to be able to import json files which can be exported from asesprite which is an incredible
software for pixel art and animation.
Personally, my biggest issue would be the ability to export to PS4 but that's something Scirra cant really help us with.
Another issue would be how difficult is to set up a proper input system the way I would do it in Game Maker, but then again maybe theres one and I havent learned it.