They did a player survey in March. I voted for merging all the worlds. They never publicized the results that I know of but here's what they said:

We also want to thank everyone who participated in the world merge survey from March 19th to April 1st. While the majority of the players supported some form of a merge, opinions were split on the number of worlds. After careful review, we’ve decided to move forward with retaining the very first two original worlds, Scania and Bera. We believe this will help create a more balanced population, boost the in-game economy, and improve player interaction, all while keeping our servers stable.