Itzik,
The way we're computing top pageviews right now doesn't scale very well, we aren't even able to properly do monthly top pages. So we opened this issue:
https://phabricator.wikimedia.org/T120113. When we fix that, it's possible we'll be able to get yearly top pages too, but I'm not promising anything :)
As for most edited articles, that can be done with a simple query on each database, but it would have really bad performance, like maybe it would never terminate. When we figure out how to compute top pageviews faster (bloom filters maybe?) we'll surface the solution and then it'll be pretty easy to get top edited.