Reign of the Undead - Revolution

I have a proposal for PU. We now have 8 different PUs. 5 are empty and 3 are full. Could it be 5-5? Maybe add 1 to 3 coins to one, or double points for 3 to 5 minutes.

And another idea for immunity, if the duration of immunity could be shown.

Yes, it's a good idea. But, I think that the receipt of coins and 2xp should be allowed after completing some kind of call, though I don't know how else to come up with a task for Powerup
Yes, the duration of immunity is also a good idea, probably in the same place as the duration of the turret or gasmask.