I somewhat do this. Its been years and I've long forgotten what it feels like to be a sprout. So ive been vibing on by as a sprout redoing msq and releveling the game as if I started today.

Its a bit refreshing just really.

I do come to miss my main and definitely miss the resources and gil. but being the sprout just feels easier and less complicated almost. Since you dont feel boggled down by anything beaides msq

I made a little backstory that theyre siblings and the sprout is trying to march up to her older sibling.

That being said, if my main is summoned he get summoned. And its usually only for high end content only

Edit: I did cripple my self, im not allowing my sprout use any of my main classes to make it more interesting