We spent another couple days in Vineyard Haven before leaving, but it turns out that neither of us took any pictures, and it's probably because it really wasn't very memorable. While smaller and less busy than Edgartown, it still felt kinda like a fairly soul-less town with higher-end eateries and absurdly expensive clothing/tourist shops, much like Edgartown. We also spent all day Thursday rocking side to side from the traffic in the harbor, which wasn't great, considering we were paying 80$/day for the privilege of using a mooring.
All in all, I'm glad we came to Martha's Vineyard and got a good lay of the land in our week here. The 3 hour van tour was really helpful to explore off the beaten path a bit, learn some of the character/soul of the history of the island. But, in general, it isn't a location that I'd really recommend -- we've had a lot more fun in the myriad other mainland coastal towns we've visited this year and others. Talking to the van driver who's lived there for 40 years, the character of the island has changed dramatically in the last ~20 years, into the very-high-end tourist destination it is now. I think it's generally lost its character in the pursuit of rich tourist dollars.
Some of the smaller towns had a little more local character left to them, but those are pretty hard for us to get to by boat, so they're probably better car-based destinations for relaxing weekends in the wilderness.
It was interesting to show up on Provincetown and immediately have the comparative realization that towns can have character, and MV just ... didn't.