I really do not care about the items. I will happily not get items if it stops RMT. But it's pretty messed up that I have to have two Fatigue systems on my SP because no one at SE could come up with a half decent idea. Here's what i came up with in 3 seconds.

When a person reaches Gathering cap allow them to keep getting real SP but replace items being damaged with Items being to poor quality to be used. Grant SP for success but make the item totally useless or automatically discarded.

Not the most elegant solution but for the love of god don't double gimp my SP..