Yeah i think its proably the ambition/scope of buu conflicting with the need for efficiancy and development.Yes, yes yes and yes. Same with our lovely (seriously yandere) pirate captain.
This is an interesting story, but it has a lot of issues currently with the writing...that can't be denied...lots of things are just 'off' if you look below the surface level of it.
He may envisioned it like the player being able to chose which LI shares the bed with the mc (for example) but it would simply require too much branching and renders to be worth it esp as he seems to have a big story to tell and keeps producing these updates on a regular basis like crazy.
I guess if he would take twice the time for every update we may would get more branching possibilitys but would that be worth it? I dont know ...
And considering how like 90% of the players love eliza and seem to prefer her above any other LI (me included) he may just decided to turn it into the MC and Eliza story. If i wouldnt like Eliza, i couldnt play this avn.
But yeah with Kira it was similar questionable which makes it feel like a harem is intended which at the same time feels kinda out of place.