I have been using a group of T1 switches to operate a two gang lighting circuit. This is where two separate switches operate a single light. I also use a wall switch to operate a lamp.
Since I want to operate the lamps from both switches, it means I need to use four slots in the scenes. e.g.
Switch #1 off - turn Switch #2 off
Switch #1 on- turn Switch #2 on
Switch #2 off - turn Switch #1 off
Switch #2 on - turn Switch #1 on
The feature request is to allow groups of switches to be matched to a new state when one of the switches in the group changes state.
The limit of 21 scenes seems low. If I had two switches I get 21 scenes. If I had 20 switches I still only get 21... this doesn’t reward customers.