I play on the Continents I find fun and interesting.
I have played on the others and did not care for them.
Being forced to remove one character from a continent will not cause me to move a character to a continent I found boring in the past.
It will cause me to pause that character and not play the game as much.
Maybby you should test those boring islands after changes kick in? I bet many islands and many realms will have changes and propably those will become more intresting.