I agree on this! As Ian we have a lot of options how much "fun" he and Alison have. We can go towards NTR stuff (retching sound) but we can also go towards Ian/Alison have wild fun together. e.g. They can be solidly together, Alison fully satisfied, but still having more threesomes in the future.Given that Alison already has a voyeur route with Jeremy towards Ian, and threesome with Billy through it, I hope the player will have more influence when Ian and her are together.
Ian has variables towards how satisfied Alison is with their sex, and their threesome with Jeremy can also go different ways, so presumably the player will be in control if Alison seeks satisfaction somewhere else or not and Ian's variables relating to his, ahem , Chad value I would assume we might control how OK Ian is with her exploring more explicit topics with him.
It is simply because of the many cuck players here in the thread that the Chad/romance couple options are rarely mentioned. and they are there. As written above, one of my saved paths is Ian/Alison a dedicated couple, but they keep on having wild fun with threesomes and stuff.