WotC has shared some of the upcoming Spelljammer ship designs in a video with Chris Perkins.
That should absolutely be a thing!Living ship as a ship grown out of a Treant is a neat concept.
Though I've always wanted there to be a living ship that's more like Farscape's Moya (with Pilot included).
It’s been mentioned in other 5e adventures also see the academy oneIs this the first confirmation of air being a resource in 5E SJ? And that it can be fouled? Very cool. I worried Helms were going to hand-wavium air for Spelljamming vessels. Glad I was wrong.