I want to refresh my Spanish, which is more conversational than formal, and my French, which is more formal than conversational. Taking Latin seems like it would fit with those, as does adding a bit of Portuguese. And recently I was reading about all sorts of "minor" languages in Southern Europe -Southern France, Northern Spain, Italy- from when those areas were many different city-states instead of today's larger countries. I had no idea there were so many and would love to at least learn about them, even if there are more than I can learn to speak.

I'd like to have a better grasp of ASL, something beyond the few dozen signs I know.

Several of the Asian languages interest me. I've taken tiny amounts of Korean, so I'd probably choose to build on that. Not as useful as Mandarin, but easier.

And then in all my spare time I'd learn Arabic, so that I could read their literature in the original.