RestosIII, on 14 December 2016 - 11:20 AM, said:
Thing is, you need to have some sort of way to keep an entire team from repairing and re-arming and making the match last forever. Making it take awhile to repair your mech is the only real way to do that outside of limiting how many repairs the bay allows. And that would cause the "fun" of people getting angry that someone used up the last repair when clearly they should have gotten the honor of using it thsemself.
Easy way to do that is to have the repair system only able to restore lost armor, and not all of it at that. Any structure damage is permanent, including lost sections. It makes some sense lore-wise, as well - mad-dash field repairs executed literally in the middle of a battle aren't going to be able to fix the machine's mangled superstructure, the best you'll get is a tech bolting armor plates on with a rivet gun as fast as he can and praying he doesn't get AC/20'd while jurry-rigging your happy ash.
For the same mad-dash pit crew scramble reason, armor can't ever be restored to greater than 75% of 'fresh' levels, and I'd go so far as to say that every time you head back for rearming, or if you've lost a lot of structure in that spot, the amount of slapdash armor your repair crews can manage goes down, as well. After all, if there's barely any 'Mech left in a given spot, what're they bolting the slapdash armor to?