Meh. I'd rather see this being focused repair.
High power usage is a perfectly acceptable thing to get that critically damaged system back up to snuff.
EX: I just got shot through with a piercing weapon, but murderized the ship what did it.
I'm minus anywher from a 1/4, to 1/2 of my SHP, but the armor's basically fine.
I'd love to have those delicate internals be patched back together in the field, like USA WW-II carriers did all the fecking time.
Naturally, getting hit in the Damage Control module screws you over just like getting shot in the jump-drive does.
Yes, the biggest reason for this is either In-Combat, to bring a hosed system back online in a hurry, or immediately after, to bring the thrusters/shields back from their "outage" states.
...
I'm sure we've all lost a battle or two from that thrice-damnned "controls unresponsive" system outage.
(was charging my drive so I could flee, had to dodge lot's of crap coming my way, took a hit, lost control, and could no longer dodge anything at all.)
Allso, this would basically need yet-another mechanics change to be "fully" worth it, wherein I could have all my thrusters "intact" but near Zero-HP per block. I'd thus have all the thruster related outages, but all the blocks are still there. (and a further change wuld allow then to eventually "break" at which point they lose what hp they have left)
^^ that kinda stuff is where Damage-control shines, but the game basically can't allow it yet, because the vast majority of "outages" are done by remaining block-count.