you're almost as unsatisfiable as iban
almost.
no it's totally a toolbox. the tape + sticker denotes what kind of gear it builds
You should make a deployable ammo-box that instantly refills all T+T weapons (with limited uses, though)
Also I think a grenade belt (think the Demoman's chest-nades, only on a belt that goes across the blockhead's body) that makes the launchers reloadable (infinite ammo like all other T+T weps) that could make balanced grenadier classes possible. Obviously smart people wouldn't put grenade belts in zombie games, for obvious balancing reasons.
Don't have-ta take these seriously at all, and I just noticed that this is kinda big for an offhand suggestion.