So I managed to get Gimp to recognize Python extensions today, and it turned out to be more hassle than it probably should have been. Still, Gimp is great as a free program, and I haven’t met an application yet that doesn’t have quirks. For those who have not been able to get Gimp to recognize python, I refer you to this extremely helpful forum post (scroll downwards for salvation). This worked for me on the latest Gimp release, 2.6.4.
This was all to get better organized, as by default Gimp does not support any organization of brushes beyond alphabetical by name. Brush Manager fixes that problem, and I am happy to say it worked for me with few problems. I found that I had to move my brushes directory to a directory structure outside of the default Gimp folders. For anyone looking for more organization (such as gradients, palettes, etc) than that, you could check out GURM.