Information between friends
Those of you who've been here long enough remember the looks of their friends' trees. Nowaday even if me and a friend have mutually subscribed each other we see close to nothing on each other's profiles. We have to exchange printscreens via Skype in order to keep the 'heat' of our competitions. I just don't see the point in hiding this information.
My suggestion is to retrieve the ability to see the full profile of a friend, and if necessary, if there are any objection, we can set some settings to ensure a profile's privacy (as we already have a privacy settings field).
I think it can make Duo more friendly and more competitive.
Personally I like that idea. I have very close friends and family who use this site and I used it back when you could see their tree. This was helpful because If we were learning the same things we could get the chance to discuss on what we had just learned.