Your suggestion is cool. More XP would make "Press F - Choose Item - Click Fix - Click Done" more attractive and useful, especially to low level players.
This would also give them new "job opportunities" to get their first XP and caps, not only shoveling shit or doing boxes. Some bluisuits could join and start selling cheap craftable items at lower prices to other players for example. Why should this kind of activity be for groups of those with level 3 professions only? I mean, a slaver might need rope and find no merchant selling them or fibers to craft them. He could buy it at 75 caps or so from a bluesuit... more XP for crafting basic items would certainly encourage this kind of bussiness...