add more challenges
You should add specific moves to the challenges. Cruyff, roulettes, lean and push, etc. You could also have game specific skills added to challenges. These could include throw-ins (accuracy, distance) and corner kicks (one point for in the big box and 2 points for in the big box).
Great idea, and something we are currently working on. Question: would you like to see these additional challenges as:
1. Challenges where you can enter scores and earn skill levels/track progress (like the 16 now)
2. Challenges that change daily where you can earn points and are simply "yes I completed the challenge"
3. A list of challenges similar to #2 where it's "yes I completed it", but you can see a list of 20+ and earn badges for each to build out your "trophy room"
Thanks for your feedback!