^ This. -1
This is the same reason why HO slots are limited.
People already abuse their tac-inserts to rearm as it is anyway (please at least do the minimum RP and go to the armory).
A better suggestion would be to have a rocket box in the armory in which HO can go resupply, but even then HO's are going to stack 9999 rockets every time. Reworking the ammo system built in Source or an ammo box entity that puts each player who uses it on a cool down similar to the Daily Spin would be a better suggestion. That being said, due to tac-inserts this isn't needed as players are going to take the easier route to getting more rockets then pestering other players for rockets or going to the ammo box.