When I think of playersexual, I view it as the player and companions having a push-pull where I’m becoming more non-player character sexual and they more playersexual. By this I mean I have my preferences as well but it’s about my character’s relationship with his companions and if I feel like the characters make sense, I’ll follow the storyline. Sometimes it leads to romance (In DA:O: my character went from being challenged by morrigan to falling in love with her organically.) Sometimes it doesn’t work out and that’s okay.
This is the most coherent case for the herosexual dynamic I've seen made yet, it's what I would expect every character relationship to be like, playersexual or not, platonic or romantic...but it's not what we're getting,
I see herosexual npcs as being a fait accompli, they're designed to sex you, whoever you are, you're given the option of declining. There's no real back and forth,
you don't start out in a platonic relationship (Shadowheart maybe?)
which progresses through a few stages of compatibility testing that might tip into a romance, it's all about your player, you paid $60 to see romance by-gum, slam the dolls together!
This also means there can be no platonic relationship before a romantic one, because they're prefigured to be your romantic partner, it isn't until you've turned them down that they're set to 'friend', I think this is what people find offensive about how up front everyone's sexuality is, the party camp scenes are like mixers, everybody's fair game because that's what they're there to be, unlike in what I would consider a better scenario where that would come out of that back and forth, like in your examples.
Because I've seen threads on this, let me be clear, I have no problem with our characters indulging in a bit of casual 'relations',
it just made the above all the more apparent when in one night everyone makes a pass at you like you're the Queen of Sheba selecting her harem for that night.