Nordinvasion's aim

[Lemon]

Yes, resurrecting with less-than-full hp is a good idea. It could also be tied in with the time limit - after 30 seconds you don't get resurrected at all, after 15 seconds you spawn with half health, etc.
With regards to medic box spam, make it so that materials are depleted with every box refill (regular cloth for medic boxes, antiseptic cloth for surgeon kits, etc). A similar system can also be applied to engineer items - wood/metal for normal barricades (both setting down the cade and building it), and sturdy wood/hardened metal for heavy cades, and maybe sulphur for explosive barrels - think of the crafting fees as the cost of developing and prototyping the blueprints for whatever item you're deploying.

Then theoretically you should be able to have as many as your resources could provide, not one per round as it is just a prototype.

It would also make people that grief barrels a lot worse. It would similarly happen for other types of barricades. And how would dropping them work? Would you charge the person who uses it or the person who dropped it.