then why not use Fallout style repair...if your blue rifle gets down to say 50% durability, then u can:
1. use mats to repair it, or
2. use other rifles to repair it.
ofc, using w or G items requires more of them as opposed to using B ones, and ofc you could only use rifles to repair rifles and so on.
that way players would have a choice to either salvage stuf for creds or use them to repair their own equipment. also, i could be made so that, as long as your equipment is at least at 1% durability it can be repaired, but as soon as it gets to 0% it is effectivly destroyed/ruined. that way we could both have destruction of equipment or the ability to perma repair it...or something.
i personally liked the perma destruction in FF OB, and this way we could have that. also, players that hate prema loss cuold avoid it as long as they pay close attention on their equipment (and with an OS that warns you about equipment condition it would then be the players' fault if they loose their equipment due to negligence, and it would also give all players the choice of wether they want to salvage something or use it for repair parts).