1) Panzerfusiliers
The issue i see with current Panzerfus is that (they hardly feel like elite infantry in terms of stock performances).
They are a 6 men "elite" squad where each single model perform worse than almost any combat unit model at stock performance, but receives big buffs by veterancy.
This despite OKW has already both doctrinal long-mid range "elite" squads and stock elite long range unit.
Proposed changes:
Make Panzerfusiliers a 5 men squad similar to Riflemen with similar cost
Standardize dps curve of their rifle and put it in line with other elite doctrinal infantry kar98k.
Tone down their veterancy.
Buff their RA.
Now they fill the role of "good quality Allies WFA" mainline option at an higher cost.
Panzerfusiliers are not elite infantry. They were once, and they were nerfed to alternative mainline infantry. No reason to go back. OKW has Obers for long range elite firepower.
Panzerfusiliers also do not get big buffs with veterancy. They basically get Ostheer standard infantry veterancy (+40% accuracy, -20% cooldown, -23% RA) and some utility (longer ability range, sprint, capping).
Furthermore there are no elite doctrinal Kar 98Ks. There's either Volks, Grens or Obers Kar 98ks. They definitely can't use Obers Kar 98ks.