This would be lovely…not holding my breath though.
I’m sorry but what would that bring to V2 ? You can already play with your friend
Most likely this feature:
Only the host needs to own and install the game
People who are away from home would stream the game to their handheld device / different (weaker) computers and play anyway wherever they are.
For those who have a controller for cellphone it could be a good idea, though i am not sure about the latency, could hurt a bit on late difficulties.