otegine is still himself, he just flails about trying to be a god because people. I went shinkiless for a month and on hiatus now, so I might not be the best point of reference.
but I think it depends on what you're going for. personally I thought it would be more fun to play as a god because Ote's personality is more shaped by what he went through in life.
but also because there is a gradual memory regain mechanic, which is gonna be fun to play with because then he'll have to deal with conflicting loyalties