I'd rather not have it heavy-crit tanks for the tradeoff-that it doesn't insta-gib light tanks/vehicles, since having an immobile tank basically means it's dead and that would make mediums and even heavies get knocked the eff out if they had non-doctrinal riegels all over. At least the riegel requires a 251 (same with USF, m-20).
If you're talking about a nerf to teller then IMO the only thing is to just remove the instagib but that probably won't go over so just do what I do when you play as allies.
Never drive on the road.
edit: since demo charges always come up, and since they can't be placed ON the actual capture point anymore, I think they should be stealthed again like they used to be, since the big beef was that you can just demo every VP and your opponent can't do anything about it (unless they bring a sweeper I guess, and I'm sure there's some cyclical argument about tellers and sweepers and how you can afford to have one near your tank but not every infantry and blah blah blah but I'd rather side-step all that and just say that since you can't put them on the VP, they can be stealth again
-- also, I am unironically in favor of wehrmacht getting access (more like axis amirite) to demos via a commander)