Weekly Pogo challenges need help

Pogo weekly challenges as well as other challenges are draining my enthusiasm.  Challenges to play a game to death by playing way too many times.  Why not mix and match within a challenge.  one weekly challenge to play game x 5 times, games y find so many particular items and game z needs so many games under a time limit.  And the same for the next challenge. Playing things like Claire Hart 70 times to complete a challenge make it so I never want to play again.