In this post I'll be using sources which could be considered spoilers, so I'll warn you when those come up.
polaris is a fine world, and hints in the game, from the producers, and (kinda spoiler) code in the game multiple codes in the game reference it. I don't mind Polaris to personally, I just didn't get to much excitement from it in wizard. It was a mystery world, mainly used to inspire wonder for the next worlds but in the end it didn't have a real lasting impression. Polaris would need MASSIVE changes in story and overall build to even in the slightest way be interesting to me as much as dangerous and mystical worlds like dragonspyre and darkmoor. There's just no real danger or passion in that place, the only time it got close to that was when you got to the penguin interment camps, those held real meaning and their short story with the seer and boss Minak really helped. But otherwise? I felt nothing to real in that place, and despite the fact we turned the entire world on its head as wizards nothing to exciting really happened. I don't want Polaris, and though What I do want may be a bit to big I can't really say I'd prefer Polaris.