An idea has struck and the brain demand's to be released in the wild.
Fission Field
Shots with Punch Through have a X% chance to not diminish Punch Through when they strike an enemy inside your Chyrinka Pillar's field. Each time a shot punches through an enemy it gains +Y% Radiation Damage per stack of Radiation Status.
The X% should scale with Ability Strength yet be a low enough number that it doesn't risk turning every shot into something with infinite body punch through. 10% sounds good to me; probably cap it at 90% for sanity checks. The idea is to make good use of Qorvex's passive while also giving single target weapons a helping hand to be more on par with their AoE counterparts in such a way that your fellow Tenno can make use of it. So nailing down the Y% is a tad trickier. It needs to have enough bite to make attempting to line up your shots for as many targets hit at once but not be so absurd it can turn an unmodded Lex into an Arca Plasmor. Speaking of the Arca Plasmor, it and weapons like it should have the damage bonus reduced. It can already easily hit everyone in front of you as it is.