Yes, this topic isnt very high on the priority list but still worth discussing.
About the handheld at options, youre missing the point... its about OKWs ability to deny team weapons without those. OKW can get a rak or shrek squad to kill the weapons as well and alot of the time it is the safer choice.
Imo a small tweak to the salvage ability should do it, as suggested a time increase or maybe make salvage unable to cancel so you actually have to consider the risk/reward situation. limiting the salvage to sturms only isnt a good option, sturms are already overtaxed, specially in the late game.
Outside of a strict nerf to overall time, tying it to number of models working on the process should be fine.
What's the point of having the whole squad doing the salvage, if the speed is equal with 1 model or 5.