I understand that, but, just like excessive use of heavy weapons is 'not fun' so is getting flung/pushed around by team rnades, arty, mortar, and general spam.
Panzer is limited to one per side anyways so these trouble makers could have been "forced" to remove the pazner/heavy instead of enforcing such a rule IMO - one map per day, IMO, is too harsh especially when some maps finish prematurely.
My idea above worked well for our server and we improved this by instead of being kicked, you would shoot medpacks from the panzer if you reached enough team damage.