Yeah, I wasn't terribly surprised that you let it go. While I loved the "no stat-based themes" rule, I could tell it didn't fly well with a lot of people. While I didn't care if someone ran an "all hall-of-famers" or something ridiculous against my teams where I had pools of <100 players to draw from, it is pretty hard to balance that type of league.
FWIW, if you had ran it one more time, I was going to do a Van Lingle Mungo theme, using players mentioned in the Dave Frischberg song. Total player pool of about 40 (I would've needed about 3 twisted teammates, since there are no second basemen and nowhere near enough quality IP). It woulda been awful.