@davidlyall Hello. You can already group rooms and have them all on the same schedule. Invent a new room (e.g. Groupee!) and transfer all your tado devices from the 2 or more 'old' rooms. The disadvantage is that one of the tado devices has to be nominated as the measuring device.
The issue of schedule copying has its own thread with many agreeing the need. Perhaps you would wish to add your voice there.