Of the three, you're right that the drama is the main concern.
I'm writing without any explicit scenes, and all the ladies I managed to squeeze into the plot (I wrote it extremely tightly so I wouldn't be tempted to expand the story), are all in a pleasant or neutral light as well.
That said, a story usually tanks, regardless of Genre, because the conflict doesn't have consequences or risks important to the protagonists. Even a less dramatic story can be poignant and meaningful if the conflict the protagonist undergoes is meaningful and life-changing for them. This is applicable to any story and is less about the surface qualities of content, but more on how well crafted the plot is. Genre just helps limit the scope so that creativity can flourish under the limitation.
Insofar as I know for BL, the only genre-adhering tropes you REALLY need is a MM leading couple (often the only romantic couple, but not necessarily), Romance plot or subplot, and ...well that's kind of it. BL is growing to be one of those really flexible genres that mix well with literally any other genre in my experience, and all the better for it.
I think, it's around there that it begins overlapping with LGBT+ storytelling when the BL couple that has all the visual aesthetic of a BL but the storytelling nuance of more LGBT+ stories. And yet, it's exactly those kinds of stories that have a chance to do well because by their nature, even if they start with a more stereotypical premise--if handled well in how the story is told, then it'll still be a good story.and I think BL readers who are well versed in old and new Yaoi and BL stories can appreciate new BL stories taking the familiar tropes and presenting them or subverting them in ways that are refreshing precisely because they avoid the problematic issues while still telling a Boys Love story.