Thanks for your feedback. We just now released Patch 1.2.4, which is leaderboards!
If you're on the global view, you'll have the possibility to change "pages" of the leaderboard, but while at friends, you'll only see top 10 of your friends.
Thanks for all your feedback! If you come up with more stuff that you think is missing, don't hesitate to ask!
There can only be 1 #1... Is it you?