Disclaimer first...I used to work (at Presidio) for two of the pro's at Stonetree, and they've let me play the course a couple of times. So I'll try be fair, but I can't claim that I'm totally unbiased here.
Stonetree has a number of things going for it:
-Green contours: a lot more movement and interest than I've seen at most public courses.
-Conditioning (at least most people would say so): I've played early both times but I understand it can get quite firm in the afternoon, and the turf conditions are great.
-Aesthetics: Especially in the hills on the back nine, it's just plain pretty. If you disagree, make your case, but if you don't find Stonetree beautiful then I think you might be a grump. Am I just saying that because the grass is so green? No, although that helps.
Variety: In the par 4's (310-470) and par 5's (510-580) especially. The par 3's a bit less so (last time I hit 6 iron, 6, 4, and 6)
Stonetree also has some things going against it, especially in the eyes of this group:
Difficulty/Severity: I wouldn't really enjoy being an 18 marker there. LOTS of lost balls and a few drives to narrow fairways (9, 13, 14, 16) that I would be quite nervous about pulling off. It's not the most user-friendly course for the average player.
Terrain (flat): Holes 1-6, 17-18, and 10-12 used to be...well, whatever it was, it was flat. Everything on those holes in manufactured, although I think reasonably well. But don't look for "natural" contours or anything that reminds you of Sand Hills. But when you look across the fence at the dead-flat land next door, you should appreciate that they did some pretty remarkable work, I think.
Terrain (hills): Holes 7-9 and 13-16 are over some pretty severe terrain and feature narrow fairways, big elevation changes, and trees/high rough not far from the line of play, as well as wetlands on 16 and 17. Lots of trouble and lost balls here.
I have to go...I have 6 days to find a place to live on June 1...but I'll write more later on today depending on how the responses look.
~Matt