Help! Notable locations for "local" space opera setting

[Agemegos]

Originally Posted by tbrock1031

Looking mainly for points of social interest - places the PCs could get into (or cause) trouble rather than places that would be of scientific interest.

Righto, I'll bend my thoughts that way.

For the Ocean planets, I was looking mainly at planets that would be "Earth-like but with 95%-99.95% water coverage".

Ah. That's different. GURPS Space uses the term "Ocean world" for a planet or moon that has oceans, but does not have free oxygen in its atmosphere. Those are mostly potential future Garden worlds that are simply too young to have undergone their oxygen catastrophe, and naturally the young A-type and F-type stars are prime places to find them.

The time-frame of the setting is roughly the 2550s, with the medium progression as listed in GURPS Ultra-Tech (IDHMBWM, but I believe that's TL9 at 2040, TL10 at 2200, TL11 at 2400.)

Whooshka! TL11.

What superscience?

If you don't mind my saying, 20–50 light-years seems a little small for 550 years and TL11. Human population growth could theoretically fill up 300,000 planets in that time. Perhaps you have huge populations in asteroid belts etc. Or a bottleneck on growth somewhere. I suppose that the medium progression without emergent superscience implies no interstellar travel until 2400, and only time for growth to fill 30-odd systems since then….