Honestly, I agree that the exp should be raised for te low level maps, but I have to say, leveling is STILL a lot easier than back in Acclaim days. I just started on BoutCheetah a little while ago, and I made lv 100 in FOUR DAYS. That's pretty quick, IMHO. Just saying, it doesn't take too terribly long to lv, as long as you stick with it.
EDIT: Also, if you add the room tag "{h}" when naming your room, it will set the room to hard difficulty, and the exp will be doubled...