Maybe the signatures should be about 250 characters max (and 10 minimum)?
I suppose people with signatures that are to long will proberbly fix it after a message, so maybe that's all that's needed.
And people who refuse, they could sit down in and ejecter chair and get ejected out of the Danny Stewart Forums residence, and then are forced to walk back with a huge boulder attached to their leg
.
Are you thinking about punishments if they refuse (or ignore) a request to shorten their signature?