Currently all variables listed in the "Avatar Parameters" list count towards the 128 bit limit and are synced. This is unnessecary as sometimes you want to locally have a button/toggle/slider which is then used locally in an animation to drive a synced variable.

I would seperate these two concerns by adding another "Synced" checkbox (like the "Save" checkbox) and only count those variables towards the 128 bit bandwidth limit. This would enable more complex behaviour without any additional cost.