Would it be possible to create for example, an IPS panel system including the basin, taps, etc then group them together so that they remain as separate objects so they can be scheduled but can be placed in position as a group? It seems unlikely but it could potentially be a time saver. I was thinking a favourites kind of thing but I'm not 100%.
Your idea seems like it should be technically possible though with the way the new railings seem to handle their ID's and such. Doubt it will be implemented for objects though, would be good!
AC 24 5004 AUS
iMac OSX (10.13.6) 4.2ghz i7
8gb ram/8gb vram