So exactly that happens every day. Mostly by players using MG, who are exploiting bugs - mostly walls and crates , where they see opponent, but you can see only the crate, or the wall from where are coming the bullets. Sometimes you can see the barrel, but is almost impossible to kill them, if you do not have PF ( for long range ). And of course some covies doing that too.
"This server has a panzerfaust rule. " This is also not respected at all. I have seen ppl just change nick after 3 maps and continue. Or simple ignore the notice from regulars, that they should leave it.
"By planting mines early, u are blocking u team engineers to not use where it's needed." This is my favourite .... Well known players wasting mines on other part of map (Capuzzo, Marrakesh..) or just place them on places where are no enemies at all for whole map. There are players like me, Ziwan, Miranda and some others who can have 40-50 mine kills per map, but with weak minded players you can have like 5-10. And then is big difference if you have in team skilled sapper or ******
So i would be grateful, if admins could place these players to spec for a second and tell them not to waste it.
The same is also with artillery. Well known players just sitting hidden in one place looking to the binoc and press the button like a mad for 20-30 mins. That is the better case. Worse is, if there is, fop who is spamming airstrikes whole map (jay1 where is airstrikes mostly useless).
Record i saw was over 100 airstrikes per map with few kills. Such ppl can paralyse the offense and destroy the game for the whole team.
So i think admins should keep more attention to such behavior which has impact on whole team and can ruin the game.