+1 Very much agree that two isn’t enough for many scenarios.
At an event generally I want two tabs at FOH and a 3rd to roam.
In Studio or self-mixing would be nice to have other band members able to change their own channel profile as they change instruments. Usually for that means three connects, but I could see 4 being a very useful amount.
I am not sure what split screens solves, this should already be possible on devices where there’s enough space for that.