Me too!
Btw I think smth like that is possible, you just need to create a function in event sheet, like:
if (compare animation frame(in the bone section) - there you must assign a bone animation's frame number), then (sprite ? A - Set Animation Frame ? B). Hope I'm right. Or ask David about that.
But: your idea is to make this process more comfortable as I understand. I think they cannot make that yet. Maybe if I will learn bones in Construct better, I'll make a contribution like advanced bone animation. At least I hope so.