Paul,
FYI, the routing on the front side of the Cashen has changed with #5 and #7 being swapped. The short uphill hole you mention now plays as #5. The par 4 along the ocean that lost its original tee now plays as #7. Mother nature, by the way, has actually pretty much restored where this tee once stood.
I agree with your assessment of the changes to #10 green complex. Both the original and the revised models have their shortcomings. Ironically, while the new version provides more room around the green I find it brings the wind more into play and the approach shot probably plays even harder.
You've also mentioned some of the common complaints about the Cashen, specifically, small greens placed up on hill sides that are difficult to hit, prevent run up shots and minimize the importance of the short game.
The greens, in fact, are everything that you say and generally speaking do prevent run up shots. All very true. But, whether this means the course does not test one's short game is, I think, another matter.
Last January, I devoted an entire day to studying this question and came to the opposite conclusion. I spent time at each green thinking about all the places I've missed approach shots and had a go at various recovery shots. If you ever have a similiar experience, I think you will also conclude that the course will test your short game plenty.
January was an intersting time to study this question because the grass both around greens and in fairway landing areas seemed far less instrusive than during summer months. It got me to think that some narrow landing areas are really far more of a problem than small greens. In particular, I would cite #7, #15 and #17, all of which I hope Watson and the club will eventually address. Too many ball are lost coming off the tee and that is really no fun.
Finally, one can certainly argue that the terrain on which the Cashen was built is not ideal for golf, but I will always remain an a fan of the course whatever its obvious flaws.