Almost certainly! I'm taking a break from sports for a bit (adding four in one go was a lot) but going forward, it'll be relatively easy to, say, add a new sport in a minor content update.
Greek houses and birth control stuff are on the roadmap... D&D or LARPing have been discussed by some of the contributors and it's something I'd like to do... I haven't had any ideas about a book club yet but never say never! It might be something that happens when I add some more evening activities.