The fact that scavenger can't replenish lethal grenades or at least tactical grenades isn't the best idea. It was good in mw2 that it did, I don't really see a problem except, people using it to replenish claymores. The door would be guarded by a claymore and when someone would try to get to them, the claymore would blow up and then they could just put another one down. I don't know if this could be changed with a patch or update, but I think scavenger pro should restock lethal and tactical equipment.
It would be cool to have more equipment and stuff. It would act as a sort of failsafe if you accidentally mess up a grenade throw or something and completely fail, so that you could get a "Second Chance" at using your equipment. Good for taking down jugs also.
I can already see a guy spamming grenades,semtexes, etc.if they find a scavenger pack motherload. That would not be very fun for whoever gets killed by them.
Peace from Wii (I don't own an XBOX, I simply wandered over to the XBOX forums)!