Well, I'm back from my round and have a few pictures of the area we're talking about. As Tom said, there's really no way to route the hole right of the oak without some major earthmoving and danger to the players on #11 tee. Either way, the view would look pretty cool from the fairway. The current green is left of the tree, Charlie's green is right of the tree:
Looking at Charlie's green site from the original:
The only possible change I can see would be moving the green back about 15 yards (keeping the back portion of the current green). It's only a slight downslope behind the green:
The steep drop off is evident left of the current 11th tee:
Looking down the slope. As usual, it's steeper in real life:
Looking back from the tee (that's the 16th green below):
The tee shot would definitely be blind on #11:
A look at 11 tee from #18 tee:
Let me know if you'd like any other pictures, I'll probably be out there again next weekend.