Tanks always seem to be in demand, yet I see tons of them around. Go figure. Either way, on Ragnarok at least Paladins seem to outnumber Warriors by a wide margin, which seems weird as I always expected it to be the other way around. No shortage of healers at least, and most of those tend to be white mages so far. I see lots of scholars in DF though, so clearly it's picking up in popularity.