So, is there any way/will there be any way to raise an opponent's/monster's affection towards you while still remaining a top, or at least being versatile?
You can do this in the current versions of the game already I think? The catch is that any human / humanoid enemies (Lizardman)' attitude towards you will drop if you either beat them (HP to 0) or Tease them to submission (Libido to max). However, other monsters such as wolves, werewolves, and swamp creatures' attitude will only drop if you reduce their HP to zero. So, you can raise the attitude of Bandits and Lizardmen by submitting to them, and remain your position as Top by keep Teasing monster enemies into submission.
It kinda depend on the enemy. Bandits don't like being overtaken, that's why their attitude towards you drop when you top them. Nymph attitude always drop when the fight ends with someone losing whole HP, doing a naughty stuff with her always raise her attitude. So it's all about the 'character' of the enemy.
But with the next update Love Potion will have another use. It can be used on the enemy and it will raise their affection.