My home course (Crestview Country Club in Agawam, MA, just across the MA/CT border) is also a Geoffrey Cornish design. While I enjoy playing there on a regular basis, I wouldn’t classify it as being especially well-designed. It features a lot of 400ish par 4’s, which play long given the turf there is consistently soft such that you get little roll. While there are plenty bunkers, they leave a lot to be desired in terms of shaping. It presents a good challenge, though, and as far as an everyday course goes you can do much worse in the area (though some of that is due to lack of crowds, pace of play, and a decent practice facility). I would like to see how it was initially designed, as much is different now than the original intent (from what I’ve heard). For example, the first hole was supposed to be an open straightaway par 4 that now plays as a tight, dogleg par 4. The greens were supposed to be relatively flat, but several have now “settled” and have some severe contours.
I would say that my experiences with Mr. Cornish’s courses do tend to support that he liked long par 4’s. Hopmeadow, Ellington Ridge, Chicopee Country Club, Cedar Knob Country Club (Somers, CT), Crestbrook Park (Watertown, CT) all have several longish par 4’s. The Tradition in Windsor is the exception that proves the rule, as it is not long at all and feels very cramped.
On the whole, I wouldn’t put any of these courses on my list of “you must play this”, but I wouldn’t put them on the “I won’t go back there” list (other than The Tradition) either.