Since I just had a look at your cap, I guess I know why you often accidently manipulate sprites in an unwanted fashion. Keeping everything on one single layer makes things messy.
So my advice is again: use layers. Lock layers you're not interested in atm. That should make for a much better workflow.
Apart from that I don't know about your suggestion. It's not a feature I would really need or use at all I guess. Maybe there are other opinions though.