I agree with most of the sentiments in this thread and am looking forward to seeing what additional content they cook up for Halsin's romance.
I was listening to a compilation of the cut/datamined companion banter audio and I have to say,
it definitely furthers the speculation that Halsin's addition was pretty half-baked and treated like more of a fling. Some of the lines in there are him alluding to wanting to join Tav and their lover in their next romp, jokes about his escapades (the erm, chimera line). Some of these combined with the infamous Drow bedchamber prison story seem to be put in there for laughs, but do not land. It feels as if they wrote him to be more of a "freaky druid type" wild ride, rather than a proper romance companion, which is especially disappointing if you solely romanced him.