When is the last time a new server was added (not counting when
pickled changed from pickled.psychosis.net to pickled.netrek.org)?  It
doesn't seem like this happens very often but I can see how it could
be abused and at least temporarily hurt games. I would lean towards
closing access and formalizing some sort of registration process for
future legitimate servers which seems  of a low probability unless we
get a large influx of new regular players.