I agree that harem ending is the kind of golden choice that would make the others pointless, plus it's a complicated ending to implement, they would have to either make variances to include or not each companion or make a one with everyone. And I don't furry shit in my harem. Or Zent for my male pcs. Maybe if he crossdress... wait, no, that's still homo.
In any case, I think their time would be better used if they wrapped up some of the companions stories, Ruksana is in a good place with the pregnancy and the romantic scene, but others are still are kind of halfway there like Tish and Clawyn for females and the Rulwe origin that was teased by the glasses girl and never got to anywhere.
Or implement that animation they commissioned PurpleMantis ages ago.