I wouldn't waste a module slot for a job a kit can do.

Changed vote to tweak.
I think it would make more sense if Repair drones actually fix it.These drones will fix your mech, and these drones will have either more Repair speed, Armour, or more HP gain.Your enemy would have 1-5 AP, to shoot down these drones.If these drones is destroyed during repair, your mech will keep destroyed.But if it sucsessfully fixes your mech, you will be alive again.
A drone that is better at repair speed would have fewer armour, that has more armour will be slower, and the one that has more HP gain has slightly less Speed and Armour.
There might be one that is equal, though.
*Huff puff*

EDIT:
Forgot one thing to say, each mech should have only one module.Or not.

Voted Yes.
I like it, it could be a rare item, could be pretty useful

Would it be that powerful a module?
I'd rather have a stash more HP (Armour) or better resists and not die in the first place!
Seems better and more generally likely to win me a game than coming back on a few HP - only if it was a really close match would I be able to pull off the win, and if it was a close match then extra HP, resists, heat or energy would have probably made it not-so-close in any event.

Not voting no tho - if some sucker wants to use it good luck

Which is what I'm saying... You're trading strategy for strategy.. Which adds a bit to the game which is a good thing:) you should vote yes though so you can supposedly beat the suckers