It's possible that my style of play is different, or that I may partake in generally larger games overall, but I actually didn't find the loss of a turn to be all that devastating. With that said, it's a mechanic that could be easily tweaked. For example, instead of losing turns for every 2 tokens, it could be changed to every three. Or, instead of losing an extra turn every two tokens, a player would lose a steady 1 turn every two tokens. Or, I go in a different route and do something along the lines of what carcking suggests.
Maybe there is a negative affect of the tokens at game end for the player with the most. And the players can relinquish their majority ownership by skipping certain turns to pay back tokens. Then it becomes an option that the player can weigh out.
This idea actually was tossed around when I was creating the expansion. I like this idea. What led me in the other direction however, was that it seemed players never actually ended up getting THAT many ale tokens in a game. Therefore, they weren't really losing all that many turns in the first place. I'd like to hear some more thoughts before anything gets changed.