Well, let me see here. I would like to make a suggestion. You don't have to like this, nor will you have to approve it. I just want to point this out, and maybe have people comment on it. I don't particularly approve of it, but that's not the case.
Anyway, I would like to propose that signatures be disabled for new members for one month. Just a month. I'm sure they can live without a sig for a month, and they'll get a feeling of what's acceptable in a signature and what's not by the time they are allowed to have signatures. Just one month of a newbie to be signature-less. I like to think of it as... giving them an extra step to being cool in EoFF. 8-)