Yes, you will be able to relocate using the Menhir feature.
at the moment this is one of a kind special 5x server and there aren't any plans about other 5x worlds but if you're enjoying it, please let us know and we'll make sure your feedback is considered
My opinions: Better use x5 sever instead of x3, cuz not everyone has time and patience to complete more than 2 months per game world (you can see the longer the game world, the more inactive players and quitters. Why? Cuz it was too slow and makes ppl sleepy - boring).
Besides, we are so close with 2020 now, there is none game has that kind of slow (I know this is basically Travian but anyway, time to change)