would players who got to godtier be able to change their godtier clothes? like if someone really disliked wearing sleeveless clothes, and they were a rogue or sylph, would it be changed to have sleeves?

Yes. Meenah actually does exactly that in the Ministrife Flash, she dislikes her clothes so much she has like, 5 different versions of the Thief of Life outfit. And she hates all of them, likely because of the beige and green palette. You can also just. Wear other clothes while God Tier, Powers don’t come from the Pajamas.