No shower in BOS... that would be the one thing I'd say the larger satellite club could use. Other than that, a kitchen etc is very unlikely to happen. The rest of the amenities are on par with other clubs, and I'd argue that BOS is much nicer due to not being packed or overcrowded, and also having excellent agents.

As an aside, I thought they killed the menus at JFK T4 anyway. When I was in there recently the kiosks to place orders were all removed and there were no menus for food, only bev. They had the expanded buffet offering with a couple additional hot choices like ATL E/F.