Just found this neat little HTML5 animation tool. As I read 
DiegoM is currently working on something along those lines I just wanted to share.
— This tool seems very polished and easy to use, so might be a good idea to use for inspiration.
https://editor.animatron.com
Some things i really like about this tool that would be really useful in Construct as well:
*Editable movement paths (Vector curves to control movement)
*Vector object support.
*Very easy to animate Transforms (Move, Scale, Rotate etc)
*Bone tool
Extra:
*Option to add basic shapes, circles, boxes with rounded corners etc. would be good for designing UI elements.
Just thought I would share since i found it pretty cool.