We tried to do that with the old SteemSavvy program, but weren't techie enough to combine it with the blockchain lol (We're getting better lol slowly)
But yeah man, do this task, unlock the next one...That way people feel confident in what they are learning and will want to progress. Top that off with Hive rewards too, could be a lot of fun...Leaderboards and all.
Appreciate the feedback man!