Thanks for the great replies everyone, much appreciated.
I must say, it really is a plus to have one of the main devs post here, so thank you for that, Ashley.
From what I can see, C2 still has a ways to go in some respects, however, I think it could fit my needs quite well in the near future. I have some flash projects to finish up and then I'll jump in and see what I can do with it. Maybe I'll try porting over some of my more financially successful games to HTML5 to test the waters (seeing as I already have all the assets and design work done) and learn how the eventsheet really works.
From my perspective at this stage; I wouldn't make this my main toolset until there are more ways to turn a profit (especially from android ads). It is certainly on the right track though if this is something you're aiming for.
Interesting to hear that about possible stability issues. I've played around with the free version quite a bit but haven't come across anything to serious yet.
In terms of performance, I just tested a webgl project on one of my really old, low-end test laptops and it worked pretty well. Far better than Flash has ever achieved on that system anyway.