Make different Salvage Icons depending on what type of Kit you are using. Right now, they are all Hammers, and when I go to salvage something with a Rune or an upgrade, it really sucks when I discover that I have double-clicked the wrong salvage kit. >< How about this:
Salvage Kit - Keep the hammer [ \ ]
Expert Salvage Kit - Hammer crossed with a Magnifying Glass [ X ]
Identification Kit - Magnifying glass [ / ]
I think it would work well with the new inventory system, since you cant have all your inventory windows open at once.

It would also be nice if you Couldn't use an Expert kit on something without a Modifier on it because they are expensive. ><