How about linking actions on the model to actions on the animation?
For example, I was recently moving the button model around to make buttons in new locations. To do this, several steps were involved.
Select button node, translate it.
Select button_frame node, translate it.
Go to animation tab.
Select the animation's button part, translate it.
Select the animation's button_frame part, translate it.
Save model.
Save animation.
It would be awesome if there was an option to have them all 'held together', so the user would just have to 'translate whole thing' and then 'save whole thing'. Ideally, something like:
Translate whole thing.
Save whole thing. (Both .animation and .model)