My current strategy is to have a directory adjacent to RBs loops directory with all my loops subdivided into subfolders... then for each project move only the ones I want to the RB loops folder. That way I can keep my hierarchical organization, and still have a small list the RB sees when I look for project loops. By keeping the selection simple, I can make more project specific loops and they won't get lost in the herd. Then after the project is over, I can move all of those related loops to the archive, and put them in a directory by themselves so I can find the whole project at a later time