I'm a 101-rep user on MO. I created an account because it's very easy to do so when you go to MO.
I've never voted and never will, as there's no way I could understand enough to do so intelligently.
I suspect that it would be a lot easier to change the privilege levels (which, in fact, already vary from site to site) so that "vote up" is 125 on MO, the same as "vote down".
I can't see that the other privilegesother privileges granted to us 101s are likely to be harmful.