Seeing as the AMX Chaffee was bumped up a tier semi recently, the PZ V/IV has no more excuses remaining at tier 5. Give it the 75 L/70, most other stats can remain the same or be buffed to match the bump to tier 6. I have wanted one, but it's also one of the more scummy seal clubbing tanks still in game, and at tier 5 seeing tier 3 new players no less.
If people complain they can just know they were dirty seal clubbers that had it coming, and now have to face tanks they can't just always run straight into.