Very useful list.
For the domination level, I think, very often medium is the best option, because it's sexually the most intense. Vanilla is not that sexual because it's Vanilla, and hard is not so sexual because it's about chastity, anal, urination/toilet, beating, which is of course not so much about the sexual spots of the body or being close to the erotically interesting gender. 'Hard' is more about the fun of extremism, that goes in a not so sexually intense direction, but some games balance it in awesome ways with medium/vanilla again.
What I would like to know about the game is, if the Mc wants to be dominated or not. When the Mc is fighting the female it's much more fun. Fighting in general produces erotical tension and heat that makes the scenes hotter and more exciting. When the Mc says he/she likes to be a sub, the fun is often gone, it's not real domination then anymore. I think the most important part is that it involves punishment. And the punishment should also involve teasing. I would also differ from dominant women who let you touch them and see them naked, or women who clearly not let you see anything and punish you for touching them. Maybe Femdom needs more subcategories

, I think it's loved by dominant men/women, because they love dominant women, but also by men/women who want to explore the sub-play, it's great how much games already exist.