OK, folks, I'm going to give Spelljammer 5e another shot. I'm surprised, frankly, that I'm the only one that's tried to run it on RPL since the runes came out a year ago. I guess that says something about the rules issues.
If you're still here and still interested, I'm looking at a more Sand Box driven game (at least to start) with few special restrictions (mostly just "no groundlings").
If you'd like to give it an early look it's here:
link to another game
I'll advertise in a day or so.