I want to suggest adding special tactics training as part of squad upgrades.
After reaching some squad lvl player can choose one of few tactics that are avalable. Some examples:
mad minute (it’s from ww1 but why not)
banzai bayonet charge
human wave atack (I know it’s more complicated but it’s too stereotypical to not use it here )
storm atack
If you want to change tactic you have to unlock it from the beggining. Old tactic is “forgotten” by your soldiers as balance factor.
Tactics can be used to temporarily give some features or use bots in certain way. For example:
mad minute - riflemans can suppress enemy, fire as fast as possible with low accuracy, lasts some time
banzai - soldiers attach bayonets and charge position indicated by player (may require better pathfinding )
storm atack - soldiers close distance to designated position while firing and throw grenades when close enough
Because those actions are coordinated by player, they allow to give bots additional utility without player being angry because they for example waisted grenades.
Additional monetisation option: xp bosters or sth like this.
I would unlock this feature at maybe 2nd squad lvl. And activate chosen tactic at gained xp equivalent to difference between 2nd and 4th lvl.
But yeah, I know what you mean.
Bots never shutting up could be a problem.
I’ve already gotten kills on account of seeing doors and windows randomly opening because bots got near them.