It would be nice to see the one-night-stand options, like Pierce, given a more fleshed out and in-depth romance. Also, for padawans like Ashara and Jaesa, if they do make them available for SGRA's, it should be done in such as way as not to present lesbianism as the "corruption" of something otherwise "pure", because I can imagine that being all too easy an option for the writers. "Oh? Dark side Sith lesbian lady wants some action with her padawan-come-apprentice? Ok, let's go with the manipulative, lesbians=darkness approach. That's not offensive AT ALL."
What would also be interesting and preferable, should they decide to make this content available only post-50 (which isn't something I necessarily find agreeable) is that the romance companions discuss some of your character's past actions/motivations in some of the romance scenes, as reasons for (or against (as in spite of)) the relationship. Not in a total "I wasn't gay before I met you" (but of course, all current romances in this game are hero-sexual, would Quinn really want to marry that many alien women, regardless of their status as a Lord?) but more of a "you're an interesting person, here's why" and also, largely, to get around the idea that same-sex romances and relationships are only about the 'fade to black' - a view prevalent among those who argue against this content.
I wouldn't think it has to be post 50 storyline. Just likely post Chapter 2. I don't recall any companion having a storyline mission brought up by hitting 10k affection. Now admittedly, I haven't gotten that high with every companion. But most of them seem to get the last storyline mission pop up, what, around 7-8k affection?
So, tacking SGR romance options with companions to the end of their storylines still puts in SGR, and wouldn't be level 50, unless it took you that long to max their affection.
Also, if they want to say lesbianism with Jaesa equals darkside, let them. They already have OGR with Jaesa equals darkside. If anyone gets offended by whatever they write, I just hope they can give the simple reply of "Get over yourself" something they probably should have been doing already, and leave it at that.