That's the problem.  However, if you combined this with locking ban appeal threads when they get made, along with a link to the pinned thread, it might help clean up Meta.  Ban appeals threads tend to just get flooded with the same posts, and they all have the same ending pretty much.

Another solution that's been discussed is having a child board of Meta for ban appeals.  I'd actually love that, because it could be ignored and I'd never have to see these types of threads again.

In any case, I have little doubt that people will still keep making appeal threads, especially for copy/pasting which seems to be the reason for the vast majority of them.  It seems like people just don't realize that 1) plagiarism is wrong and shouldn't be acceptable even on the internet, and 2) it's actually against the rules on bitcointalk.  And then you get the lies and denial on top of the actual crime and the begging for a 2nd chance.  It's really old at this point.