I upgraded the server to 1.17 finally this weekend. Everything is going great so far. I worked a bit on my new district, which I have started calling “Skydown” for now. I also did a bunch of updates using some of the fancy new 1.17 blocks! I upgraded some domes to be made of real copper, and redid some of my large maps to use the fancy new glow-ink-frames.
I did a major overhaul on the Imperial Map Hall in my Senate Building. With glow-frames, I could re-expand the room one block on all sides and take the glowstone out of the wall. I also redid the floor in deepslate tile, cuz why not? The room looks MUCH better now!