Dunno, but GM isn't a solution for fast relog anyway.
You have 3 minutes to react (and you must be online monitoring players all the time)
and it's problematic to prove anything to someone who just logged off.
More importantly, it's impossible to tell what is and what isn't "legit" fast relog, because
the timer was removed.
Now this might just be me talking stupid shit from being tired out from a long day but:
How about an Alt limit?Everybody gets 5 characters that they can make and remake.
Suggested millions of times before,i know,but hey it gives some promise.
Yeah wouldn't really help since proxies exist but it would give some delay to it.
Besides by the time a person moves all of his alts to the combat zone the battle will be half way done so FRing wouldn't really pay off.
As for the GMs thing:
Well it would be nice to hire a few more of them,just for events and "lulz".
Just get a few clowns to make crazy shit once every few weeks to keep players interested and always looking forward to something (next month there could be a redo of the old easter event for example).