Well, I still try to ReMix... not as much anymore, but not because I lost interest. I'm in grad school, 3rd year, so by that time I just have a lot on my plate. (Officially became a Ph.D. candidate starting May.)
I finished 1 recently, which I think I started in May, combining Chrono Cross and Pokemon Super Mystery Dungeon, and I still found a lot of enjoyment in the process of doing it. I don't have all my supplies with me in WSU, but it forces me to be more particular about harmonic and melodic cooperation instead of production and sound design, and instead I fix up the production on holiday breaks and such.
Either way, I still ReMix, it's still as fun as it used to be, and I do so BECAUSE it's fun, not because I feel any obligation to do so.