My bad about the Fausts didn't see you'd planned to remove them.
Seems I understood the healing ability perfectly though and my point still remains. There's a reason grens/pioneers can't use healing on themselves and that's just as relevant (way more even) for these guys. Just imagine them back-pedalling to an ally OKW FHQ after every attack, healing at ultra speed, replenishing models then going back on the offensive.
They can't fire while using it, can only use it out-of-combat (obviously due to my statement before this), and I'd plan on it having a 150 second recharge time in-between uses; Nevertheless, you still bring up a good point, so I'll change it to 25 munitions to make it less cost efficient compared to simply making medical bunker. As for back-pedaling to an ally's forward HQ, Considering that it would be a 2v2 to 4v4, that would mean you would have to run all the way across the map to where your ally is located to finally let that take effect, which in my opinion, isn't a good deal. It's kind of the same thing as a Königstiger going back to an ally's pioneer squad just for repairs instead of going to your own Mechanized HQ. I'll change the reinforce time to 10 seconds per model, and I just realized that I didn't include that on the main post. Oh yea, sorry that I thought you didn't understand. Some other people thought that it was an upgrade that allows passive healing.