Will sandbags / barbed wire still cost garrison supplies to maintain ? will they keep decaying as they currently do ? considering the added effort to build them now.
Will AC's receive a overhaul in the future ? i believe in their current state they do not find much use mid and late war .
What happens if tanks try to run over a emplacement trench ? since they don't destroy them for now ?
Will the ignifist or white ash flasks receive a rebalance in the future ?
Will the warden mortar tank receive a buff in the amount of ammo it can store ? or perhaps be allowed to stack mortar shells?
They will still cost Garrisoned Supplies to maintain yes. Everything needs to decay in Foxhole for server performance reasons.
You're right about ACs.... In terms of balance, we'll probably review the other things you mentioned as part of a more dedicated balance pass in update 47 or 48.