If keeping your name is the only problem you have with servermerging, it´s not that dumb of an idea. First off, what difference does it make to alter your name and Legacy, it´s still the same legacy and same character unless you're one of the RP extremists, which would mean you'd belong in a RP server.
And if servers were to be merged I think the PvP ones are the one in dire need of merging.
Anyway I bet 100K Credits that there will first be character migration available for some of the lowpop servers.