I've Noticed that myself as well as most people in my guild have quite a very large excess in Sim Tickets, Low-Level Ability Mats, Low Level Gear etc. Gear wise, this isn't a major problem for lowe...
Just as we can 'favorite' our toons in our rosters, how about a 'gear lock' feature that the player sets on their gear so they can't accidentally sell it. We'd need to be able to see all of our unused gear, though.