That would be a worthwhile thing to consider. However you'd probably need to give performance/price adjustments to some units; and that's going to be a headache.
At this point, we're triaging the problems of the game from highest-priority to lowest-priority. Thus, instead of wasting all our credit on fixing every single unit in OKW arsenal, we prefer spreading our resources to liven up the other factions as well.
I can't think of any OKW vet5 unit in DBP that is still fundamentally broken. If you can think of any, let us know.
Yeah, ok sure, a vet5 mg-34 might be on the OP side, but that's extremely rare, too.
I find vet 5 raks OP. But they're not unkillable. Cloaking 75% movespeed with fast RoF. Get lucky they don't hit the dirt and you can wipe things quick. However they still have the issue where all the models bunch up on retreat. So easy wipes for howitzer carries like the bulldozer.
Also, with the QoL cloak change, where the units move at normal speed if revealed, does that fix the issue where the revealed rak crews are still moving and snail pace to recrew the gun?