Atleast Gloria's romance isn't as creepy as Judy's in DA, where you could sexually assault her as soon as you met her, even though she's supposed to be your daughter. Like, Judy and the MC get slipped a drugged that makes them uncontrollably horny - the same drug that ruined Stalla - and by the end of the game this somehow turned into a romance.
What I don't like as much about Gloria is that her dialogue almost makes it seem like not pursuing her is the bad outcome. I know her and the MC share a mental connection and wet dreams, but she always seemed to be uncomfortable with this. Then she suddenly wants to jump on the MC's dick to lose her virginity and is so very disappointed, when you tell her no, that pursuing and not pursuing her almost feels equally bad.
The romantic buildup is much better handled for the other LI, especially Katie and Ellen. It almost feels like Gloria is the intended LI you're supposed to go for, but it's just so handwaved. It's weird that it happens so late in the game, when she's already established as the little sister, as you said.
Yeah goosing Judy on Day 1 the night after meeting Carli was just wrong. I did a Judy run ONCE, and it just didn't feel right at all, and I didn't use the patch. Couldn't imagine how I would feel if I did.
And you're right about Gloria in this game, when it comes to her and the MC. She's so put off by the dreams they share then suddenly, at a hotel in the desert, she wants a piece of him because she doesn't want to die a virgin. If Gloria was the intended LI, as you referred to. Katie is there with you from Day 1, and if you play the cards right, and ask her for help, and then the party, you can see, after the party, and then later in her office, a bond already starting to grow between them. That just felt so right.
Ellen's route develops out of saving Gloria multiple times, but even that felt right, because of the history they share. Gloria's though, with that sister feeling, just isn't right, and I guess borderline cringey.. If you didn't have to save her multiple times, and she was just another LI, maybe I would've felt different. But it was a definite "love at first sight" moment with Katie for me.
I felt bad turning Gloria down at the hotel, but being so devoted to Katie, I wasn't about to more forward with her.