I'd be in favor of banning Travelers from the Party Finder completely, and forever. with just the exception of Private tab PF so people can remain in statics.
Or maybe even keeping the private tab PF for one tier, with the next one banning that too. I wouldn't doubt a lot of people might just put the passwords up in private.

Cross DC travel was supposed to be a way to play with your friends on other dcs. Not a way to create super datacenters, there should had never been PF for travelers in the first place.