Anyone who wishes to change the lyrics of any sort of song has to adress it beforehands. Be it just a word or a vocalist, this is how it will be done from now on. Typos do not need to be adressed as long as only typos are changed.
I came to this decision after seeing that one person would change a word, then a few weeks later another would change it back. This rule must be followed by every user, especially by admins. Since there isn't any wiki like this, I think this is the way it should be handled.
I've created a new board, if anyone has any propositions, post them there. You are going to be told whether it is accepted or not and I will be the one who will be closing the threads. That, of course, does not mean, that my opinion will be the sole deicding factor.
EDIT: I thought it was obvious but seems like it wasn't. You also have to provide some kind of evidence to back up your suggestions, otherwise they don't have much chance.