Will the player be able to pick if the MC's personality? I know it would take work to write new dialog and scenes to accommodate that but I'd prefer if we could pick between being a sub or a dom. Submissive isn't for me.

Not planned at current moment. It would take a lot of time and budget for writing doubling the games development cost. We just can't afford to do that at current moment.

Going forward there will be more opportunities for the MC to play a dominant role, but those would be scenarios.