I agree that Halsin needs improvement but from what I understand this Helia talking point revolves around she is not elf nor another druid and has a complete story. Allegedly.
And literal pages upon pages of speculations, wishlist and head canon... and more presumption that Helia is automatically better than Halsin because Halsin is "Sex Offender", which I believe a hyperbolic reaction over romance trigger mess and over analyzation of his dialogue lines.
It's not to say I don't want more companion. More companion is good, better system for companion implementation is good. Better written Halsin, is also good.
That being said, to circle back to my original post, usually Developer has reason to cut her off, you might disagree but it's ultimately their art, no matter how good you think "x" is, if the Artist doesn't think it belongs within their art, it will not be in their art.
I personally would rather Larian to focus on ironing the game, not to add more Variables and potentially break new things within the game.
