Equip it on Laser Tanks, Assault Bikes and Walkers, drop Plasma Bombs on your own vehicles (or Plasma Bomb the area you're moving them to), profit. They'll only take scratch damage most of the time because of their generally decent armour and the +3 Thermal resist. Worth it for the regen and damage boost imo.
Heck, give it to your infantry even. Have half of your Purifiers jetpack forward and have the ones at the back Plasma Bomb them, Plasma Bomb the Troopers, and Plasma Bomb the Engineers and their Turrets.
Edit: Anyways, going back to something a bit less off-topic, I just realised that picking Xenoplague as Shakarn lets you basically roleplay as XCOM's Snakemen + Chryssalids.
I mean, that mod would work great for the Shakarn Purifier. mod them out tanky set them if fire hazards and just watch them tank all the things.