Sorry, but your logic doesn't make much sense. A throuple with Mina and Hana would most likely depend more on choices regarding Mina and Hana, than the club itself. And even if it was linked, it would most likely be the opposite of what you're saying, like we'd have more chance of getting the throuple if we don't fully embrace the corruption of the club.
Also the beginning of Hana/Mina felt very right to me, and even if Mina seemed sort of desperate, I think the very fact that the kiss scene even exists, and that 1. Mina admitted to be attracted to both and 2. Hana isn't completely against it either, makes me think that there is a possibility, and this possibility isn't small. I mean, why else would this scene even exist ? If it leads to having to choose only one of them no matter what, then it would be kind of bad writing in my opinion (even acknowledging my biase, the very existence of this scene without any possible payoff would objectively mean bad writing). Or it's just to torture people living on hopium like me, but then... what the fuck guys ? Didn't we suffer enough, geez.
As for the Feli/Mina threesome, that's not what I'm talking about here. I'm pretty sure a Feli/Mina throuple is totally off the table. The Mina/Hana one will most likely be the only one possible.
The circumstances are different. Like dolfe said it would be FMF rather than MFM. Plus they're not the same characters, and in this case Mina and Hana are both attracted to each other as well. Edwin and Ian weren't fucking, that was the issue. Also Ian sucks at relationships. A throuple involving 3 people who are all attracted to each other, both sexually and romantically, is more likely to function.
Ah, I shouldn't have written anything. Now I'll have to resist the need to defend my Mina/Hana throuple fantasy against everyone who don't believe in it