well maybe,but mostly it would be the same sex scenes maybe some more dialogues and options to choose to get there or not,but all in all it would be the same sex scenes.You forget though that both the girls in the Bay and MC would be in a very different position in open relation or breakup. In open MC can sleep around but is still in a relationship, so does not have the same freedom to start a new relation and for the girls it means accepting MC means they need to share him. So, no it would not be the same for all those other relations that within the context of this game are just as important or more important as Nicole.
Nicole was just a blocker for MC/Sis/others sex originally and an extension of the bad influence of his fathers in MC's life leading to a toxic relation between them in episode 1, but it looks a bit that some of the team came to like Nicole. Making her role more important and getting in the mess we are left with instead of someone MC just had to leave to get on with the story. There will be no good relation possible between Nicole and MC as they are now as they have been set up. At least not without MC having had years of therapy and dealt with his fears and the patterns they caused in his behavior.
maybe some more renders to do to get there but i doubt that it will be a ton of more work to do.