After watching some recent youtube videos, the game is now 20% easier. Basically the enemy respawn rate is reduced, and the ball speed is slightly slower. I think the balance is about right now, but let me know.
I've also added more 'Oomph' for when you collect a power-up! This was also a user feedback request.
Any problems let me know on the forums, I'll be adding a cool bonus soon as a thank you to you guys. I'll keep you posted!
Paul