The scene with Dalia in the bathroom is on a grey area to me, I mean Orion was cleaning the bathroom and Dalia appeared all of a sudden, Cari could have played it differently like maybe with her already half dressed and leading to a similar ending but overall I didn't consider that so bad it was a cliché typical of porn, while the Eva one puzzled me too a little, not because it wasn't good but because it was too abruptly after Annie went to get the sword.
It could have been played better? Yes, but to consider Orion so negatively? No, I respectfully disagree with you.
It would have been bad if there was the choice to let Annie know about it, that would have been a bad end plain and square, but as was played it was the typical scene that you could find in a cyberpunk, my only complain is that it was just too sudden, at least that's my opinion.
P.S. About the Eva scene I still have the impression that it was instead a planned scene by Caribdis that will come back in the future, my opinion is that we will see Eva again and maybe deciding to have sex with her will make her a potential side LI, or an ally for Orion and the girls.
It's a gut feeling nothing more, but the fact that she said that Eternum has a way to make people connect again lead me to this thought.