Yeah this is another problem. The gren G43 is pretty ass at mid range and beyond, making it hard to find a good engagement for them since Kar98 works different. But I think giving it too much of a mid-range and/or longrange buff is no option because it would either be OP or overlap too much with lmg42 and Panzergrens.
So I thought basically a "weaker Ober stg44" would be ideal to help them finding better engagements without fiddling with their wipe potential and longrange performance too much. And I also dont think this change would allow them to just brainlessly charge into an enemy that waits behind heavy cover since grens still have the low survivability
I more or less agree with you, its just that I am a bit skeptical about cover ignoring weapons, since it involves no brain power to use and thus will lend itself to be spammed.