I just came back from Gates 2 weeks ago and we did some hikes, but unfortunately we weren't camped at Rippling Brook, so don't know about around there.
Winnie's Grotto was a great little hike. We just had lunch there and did the hike. Only took a half hour or so.
We were camped at Limestone the second night, and found a trail downstream of camp that was a great hike. Got up pretty high with some good views.
And Jones Hole has so many good spots, but it sounds like you've done most of them before. They're worth repeating though!
Have a great time on your trip! Wish I was going again....
I choose the road less traveled. Now where the hell am I?