I agree that Saratoga homes barely fit on the Ridge lots, and that they’re not really big enough for a Derby Hill. All of that notwithstanding, the original plan was to put 3,000-3,600 sf homes on those lots. That is larger than a Saratoga and smaller than a Derby Hill (Derby Hill homes are 3500-4600 sf).
As far as putting CR and Saratoga on DH lots, that was speculation on rhinopham’s part, and, considering the sudden and drastic change in the plans for the Ridge lots, I don’t think it can be ruled out. Of course, putting 3,000-3,600 sf homes or Saratoga homes there seems somewhat less unlikely than putting Carriage Run homes there.
There are plenty of neighborhoods where large and small homes are in close proximity. Steeplechase and Lexington are right next to each other, and they are nearly identical in size to Saratoga (Steeplechase) and Derby Hill (Lexington).