This would be a great QoL. Allow them co-exist, and be openned both.
- Sometimes we are with friends and 1~3 players are out of keys and 1~3 players are with a lot running grs.
- A lot of time we join public games gr have already started. So to avoid waiting 5-15 minutes they could run some rifts.
- It would promote friends to stay on the same game (than privated closed game each player).
- Players more united in less games the overal latency would get better.