As I said, you're the boss. And it's not a deal breaker for me, as far as enjoying the game is concerned. But it is a deal breaker, as far as taking that route.
Cutting down on the number of routes, I definitely understand. You already have your plate full to overflowing. But I certainly don't agree that Lisa asking Aoife to accept a polyamorous relationship is callous. If she's honest with her going into it, and makes it clear that she (Lisa) has deep feelings for both of them, I think it would make sense for Aoife to accept that with good grace. Though it would also make sense for her to say "Hell, no!", because not everyone is down for polyamory. So, while I don't think that it would be callous of Lisa to try for that, I also think it would be reasonable of Aoife to refuse (and also reasonable to accept).
I guess I'll just check out the Aoife content in the gallery. That's always an option.