Steve:
I grew up caddying there, it's in my home town
Unfortunately, my father-in-law spent 7 years on the waiting list only to decide that when he got called for membership back in the 80s that he'd pass. Otherwise I'd be a member today
Anyhow, it's a fun members course with some interesting and small greens. The front of the par 5 11th green is a small narrow saddle that fans out into more of a pear in the back.
12 is also a bit of a bowl and it's small.
Overall, they've done a decent amount of tree and brush removal over the last 5 or so years and have added (or recaptured if they were once there) runoff and chipping areas around many greens. They've done some good work with fescue grasses recently and still could lose a bunch of trees. One recent renovation that I don't like is they significantly softened a deep pot bunker to the right of the short 4th hole (141 from the tips). It used to be impossible to get it within 20 feet if you missed a right pin to the right side in that bunker, now they've shallowed it out at least a few feet and also widened the bottom
Like typical Tilly most greens slope back to front and are pear shaped for the most part, pinching in the front to varying degrees. For the flat portion of the South Shore they have the anticipated amount of slope. It's not hilly Westchester but it's plenty difficult if you get above certain greens (especially #3, #7, #9 and #15).
IM me if you're ever on LI and genuinely interested in seeing the course as some of my wife's extended family are members there.