Why is a name so important?
What if everyone else on the server doesn't want a merge, just you.
Your worried your feeling will get hurt by having to change your name but don't care others people feeling when they get forced a server merge because you want.
What if your server isn't the host server and through a merge you'll have to change your name anyway.
This is a silly discussion.
Deal with the name change and move or stay on that server and deal with the low population.
Easy solution.