
For the Pak43 the range means something diffrent then for the TDs, because its the area of its effect. It's the ground it covers.
For every other calculation, the range of the Pak43 doesn't really factor in as much. For example, It's direct counters are not affected by more range (arty/offmaps/mortars/infantry).
If you attack it with tanks and flank it / hide them a bit in the fog of war it also doesn't matter.
The only time it really matters is if you attack it directly from the front, and I think we are all ok if that doesn't work.
I would suggest atleast 90-95 range.
On the other hand I would also be OK with other buffs.