Having a variant with the same number of turns is not something that I ever thought necessary in the 19 years of playing the game. I have found no inherent advantage or disadvantage depending on turn order. Going first may give you different placement advantages, but going last has different placement advantages since more tiles have been placed and there is a better possibility of building up. The goal is who ever builds all of two of the three building types. I don't see how having an equal number of turns would help. Granted, I rarely play the game with four, as it is best with 2-3 for the simple reason that the game is more likely to end because of running out of tiles which is not nearly as satisfying. Maybe it would be helpful if boardgame arena implemented the official 4-player team variant as provided in the
Taluva Deluxe edition?