As for the second, I don't think this would fit this game, and is much more naturally a part of DoL. The devs are also very adamant that any form of non-con are a no go due to Patreon rules, even consensual non-con. So I doubt this will ever be in-game. Perhaps mods could help you here. But I don't expect a corruption mechanic to make it into Course of Temptation.
Let's hope modders can implement a corruption system that corrupts both the MC and has the MC corrupt others depending on choices.
But I disagree that corruption of a character over time implies non-con or even consensual non-con. It's just, you've lost inhibition due to corruption and now, due to horniness and high submission / attraction to x character, you just no longer have to option to say no to certain things (they can choose in the options to avoid this). It's just corruption, not non-con.
I'm not saying that anyone who comes up to you and asks to fuck should mean that a highly corrupted character shouldn't have the option to say no, it's just if they insist and the MC indulges them a bit, it snowballs into being no longer able to deny the MC's horniness and thus not able to say no.
Does Patreon consider that non-con? If so, we need to all start using a different platform.