A blast from the past indeed. The question I have is: does this have any sort of endgame at all?

But after that the game just seems to stagnate, there is no conclusion or additional content that I know of, is that the case?

Also: I’ve played on Linux and am just taking the opportunity to report that the game works fine on Wine though I did have layout issues with my system’s wine version (5.19 currently). Since I was running it through Lutris, I instead switched to one of their custom wine builds (lutris-fshack-5.7-x86_64) and that seemed to sort it out so, will work, may need some minor fiddling about with this sort of thing

There's a conclusion to the story, but you need to build all the extra living areas and do something really excessive with a certain late game tome.

That's good to hear about Lutris. Hopefully that'll make it into mainline someday.