I like to share my input in regards to this. Not so much about the world transfers/merges, but more about the players' characters.

Considering that we'll be able to change race and gender come 2.0, SE has to offer a name change either before or during the distribution since those gender swapping won't or might not have a suitable name to match.

I'm one of the many individuals excited for the implementation of the missing genders and I plan going as a male Miqo'te. As much as I like my name, albeit not original, I'd like to be able to change it to fit with my "reborn" character.