Interesting question.... It has my brain whirling trying to remember every hole on the championship courses. The ones mentioned are good ones. My answer does not mean they are my least favorite, just tough ones that come to mind....
#7 on Caroline and #10 on TDS are tough holes, but I think fair. By fair I mean anyone can play the holes. Another hole on Caroline is #3. A
simple little par 3. It is the type of hole that would worry me if I am playing in some medal play event. Of course I do not do that anymore, but it is the kind of hole that could ruin a round. Imagine #3 with a 15mph wind, pin back left and NO drop area (tin cup moment). I can just see the qualifying round summary; AJ is two over after 11 holes (I can dream) and makes a 9 on the 12th ……
#5 on Caroline is just a poor design IMO for a retirement community. The hole can be a birdie hole for folks that can still carry a ball 250+, but there is no fair way to play the hole if you are a short hitter. Maybe the designers had no choice, but I think it needs a culvert providing a fairway where the bridge is now to give shorter hitters a chance at par.
How about #8 on Glenview Stirrup with the pin back left?
Or #17 at TDS from a back tee?
Or #2 on Riley Grove at Palmer. When that pin is back right it is one heck of a par 4. I have yet to hear a reasonable explanation why that is the second easiest hole on that side?
I am sure there are more I am forgetting......