Hi Pravin, I absolutely agree with having more relative links in one's profile page. I can promise this will be coming in the near future.
Regarding points 1 and 2, the real goal of AppleTree is connect everyone into 1 big family tree of the world. So the answers will eventually be very large. Hmm, that's not a bad thing of course. I like this. You'll likely see the numbers small until we finally match someone to the big family tree and then the numbers will suddenly make a drastic jump. I had decided this information wouldn't be important given our goals, but I'm going to think about this.
The total number of relatives per degree of separation, is this really interesting? What would get out of this series of numbers?