Hi,
I suggest turning doubles into 4v4 format instead of 6v6.
Previewing the enemy team, selecting only 4 mons with aprox.~1min before battle.
I think this will give us the double format experience in a whole, where you need great decision making.
Momentum doesn't slow down and allows PvP to be more dynamic, imo.
Thank you for your attention.
Best Regards,
TheProfG