Had a list of feature requests I was thinking to submit, but I guess I wanted to check if they're "theoretically possible" before writing them all up:
1. Getting collision point coords, and defining custom collision polygons in events.
2. 9patch having mesh support.
3. 9patch having "load from url" support (and setting margins in events).
4. Setting a dynamic layer to 3D.
5. Adding effects to dynamic layers.
6. Having multiple "cameras" or viewports, for things such as split screen or a 3d game with a rear-view mirror. (drawing canvas proved to be bit laggy for this).
7. Add/change image points in events.
If some are impossible (or are an enormous amount of work requiring major changes to C3 and maybe still discovering it's somewhat impossible) then I'd put those thoughts to rest and move onwards, just wanted to save time in submitting it all if they were hopeless to begin with - had them in mind for years but haven't submitted yet. Some of which are what I'd consider the "last pieces for making a fully moddable game" - currently I believe C3 is very powerful in terms of modding support as it stands, just few remaining things, some of which are able to be worked around, but some cannot.
Even just "yeah all are possible" is fine, but always happy to see deeper explanations! (no expectations, can wait and see if enough votes reach each one and discuss further).