Gameplay would significantly improve if people would mark enemy positions and build spawns. AA Turrets, AT turrets etc. I believe the best way to convince people to do this would be to implement them as battle task.
battle task:
As a Engineer, build 3 spawns.
AS a engineer place 3 ammo by capture point.
As Engineer build AT/AA
I would even go as far as score so many points with razor wire/sandbags
Another… Mark enemies x 30 that leads to kills. Not sure if this game engine is capable of it or not. I would love this one not be skipalbe and come up every 3 or four task so people will mark enemies for once!
A lot of people would also use mark enemy if we didn’t have to ADS first. but meh its not that much harder.
I usually skip things like " get x mortar kills, or get x artillery kills" , but build x spawn radios is very important for winning the game, thus every player should be encouraged to do so.
Besides that, I wouldnt go as far as forcing players to do razor wire tho.