I just reinstalled after a while and discovered an apparent bug:
When you skip time several months and teleport somewhere in the world, time stops passing. e.g., I changed the date from January in the afternoon to December at 7:20am, and sailed for a few hours but time never progressed from 7:20am. Only travel acceleration could make the time change (not physics speed) and nothing I could would make it 'un-stuck'. This makes longer passages fairly pointless. When just pressing 'World' to start a new game, all works as intended.
I do like the new behavior in high winds, but noticed two things that might need tweaking:
Are the courses weaker than the topsails? With no reefs in either and 50 kts of wind, I lost both courses but not the topsails.
What is the angle of vanishing stability for the ship? I think I was heeled over around 70 degrees but came up again. It happened fast though, so maybe I just couldn't judge it well.