Agreed on Partisans. Combining AT and AI Partisans into a single unit that can upgrade instantly with either SMG, Molotovs and Grenades or Panzerschreck and AT Grenades seems like a good starting point, as it would free up an ability slot. Plus, it would buff to Reserve Army too.
However, I bet that either Anti-Infatry Tactics or Terror Tactics will get a refresh instead of Shock Army, as those two share 3 identical abilities between. I think that's a record right now.
EDIT: My bad, Ostheer's Fortified Armor and Blitzkrieg Doctrines also share 3 abilities (Panzer Tactician, Stuka Recon Overflight and Command Tank).
TBH i wouldn't mind if we deleted 1 or 2 commanders from EFA and just give people 15/30K in supply.
The commanders you mention i feel are less that they are bad, it's just that generally there are others which offer similar things or better.
I don't mind if there are commanders that share many abilities if at least they have something unique. For example, Fortified Armor with the Elephant.
As far as unique abilities goes which could go to other commanders in order to diversify them we have:
OH: Stun grenades, Single AT and AI strafes, Opel Blitz, Pinning Stuka Strafing run, Defensive fortifications, Breakthrough,
break the supply line, close the pocket, VSL, Assault n Hold, Jaeger command Squad, Airdropped medical supplies, Counter attack, Puma,
Osstruppen Reserves, Supply Drop, PIV J, Breakthrough equipment, Mobile Obs Post.
SU: SVT, (Airborne rally/Guard Airborne), IL2 Rocket, FMR, B4, Advanced fortifications,
M4C Sherman, M5 Assault Group, Scorched Earth, Commisar, Partisans AI, Spy Network, Repair station, Conscripts PTRS, PTAB, FHQ, Booby Trap,