Everyone here is just assuming that experiencing whet they're like will make him change his mind, but I highly suspect Hrothgar are the way they are because Yoshida doesn't place the same value on constant redesigning of his character.

He's been playing the exact same Lalafell with pigtails and the Minfilia dress since forever. I don't think it's just for branding, because it would be such good marketing to switch her to the latest Mog Station thing and new hairstyle, or even new in-game fashion to show it off, but he chooses to keep that specific design and never change it.

I think if he was told to play Hrothgar, he well may do the same. Pick one design that appeals to him and stick to it. He'd come out of the month saying "yes, Hrothgar look great".