Same here.
Some points:
- Navigation feels weird.
- The main call to action should be "Try Codewars" instead of "Join Codewars" so it'd feel like "no compromise just try it", also it'd be clearer that you can actually try it out before signing up. I agree that the teaser should be longer than the 2 small exercises.
- The webcam in the monitor kinda creeps me out and draws my attention away from the important stuff.