This dev won't do that. It would require a lot of work and writing and they've been milking supporters for years at this point with drip feeding minor content or adding new side routes so they don't have to actually write more on the main paths and possibly finish them.
Your pessimism kind of makes me sad. I can see where you're coming from, although I haven't followed this thread for a while, but is this arc really that much more work than others? I mean, a few updates ago the Alex arc got some development, I'm sure that pleased part of the audience, but others may prefer to keep Alicia, and some of those would like to see her sharing path developed. It's in the story already, so why should it be more work than other arcs? Alicia's sharing story is just hanging in limbo. I bet a number of haters would surely hate it, but it's a completely optional path, and, reciprocally, it might bring some new players if they added the "tag that shall not be named" LOL But without a bit more content into it, that arc is still only sketched and would disappoint if someone played the game for it. Fortunately, this game has got quite a bit of content already, a good pace without too much grinding or developing too quickly. This is likely just one of many WIP branches.
I think there was a point a few months ago where I got some response from the dev here in the forum (I may be wrong, though... too many games played since), so I posted in the hope that this might be a direction they'd intended already, and might be encouraged to pursue.