How would it benefit the server: Basically you have an item, that you bought for cash, and that item gives you the power to regain any special weapon you had ( if you died, or got arrested with it ).
Potential Issues/Exploits: I really don't know, it's your decision if u wanna add it, and you're very experienced with coding, so...
Tbh, they'll never add this in the game. With this, there's no more "rare items." I mean if I were to have a Nano and I just died, and got it back. Then everybody would use their suits in a raid, without caring much, since clearly you will "regain your item back" if you died. If I had this, I would've never lost my ACS.