Look, the problem is simple, bi-option relationships suffer in quality writing. I tried Josephine and it was, for me, my least favorite relationship thus far. Where as, when I tried Cass, it was a night and day difference.
If they truly want to solve this problem, then separate dialogue needs to be set for both. But why bother? Not being able to romance everyone under the sun really shouldn't be that big of a deal, right? At the end of the day, it's just a game. I'm not sure if I want the writers focusing more on relationships at this point. There is a host of other bits that could use more attention.
Was Josephine's romance less interesting *because* she was a bisexual romance option? Does she even ever talk about being bisexual in any context? I've been meaning to ask in her thread if there's anything in her romance where she talks about her sexuality at all. I have a suspicion it never comes up.
Is it possible that Cassandra's romance is better not because she is strictly heterosexual, but because she's the "leading lady" of this game, and because the Inquisitor spends much more time building a rapport with Cassandra, whether romanced or not, so that her romance feels more interesting and fulfilling?
Personally, after feeling obliged to at least try the Sera romance, I still would prefer to romance Cassandra with my female Inquisitor. Both because I really like how Cassandra was written, personality wise, and because she was written to be a major character with plot relevance.
I fail to see how "Sera will join you FOR NOW" and having to be careful not to kick Sera out of my party every single time I chat with her conveys any kind of relevance to her character by Bioware. If anything, it feels like they want to reassure players that Sera is disposable and can be easily erased. I can't even get a read on Josephine, so I haven't tried to romance her, and probably won't. So yeah, this brave new world of "fully gay characters" and REAL bi/pan characters isn't doing anything for me.
I'm happy for those who feel that Dorian's romance was well written, it sounds like it was. But I don't really see how the f/f romances were made "better" by this system. If anything, I was once again reminded that the main female romanceable character, Cassandra, was meant for straight male gamers only, just like characters like Bastila, Miranda, Ashley, and Morrigan before her, and that isn't a pleasant feeling.