Yep, sound would definately help...
I'd also like to see more changes in the race based on your choices.
When you give a quibble steriods, he actually looks bigger
When you drug a quibble, he actually runs weird (maybe up and down zig zag instead of a staight line)
Actually show the shackles and damage from the bat
Maybe even show the dead quibble on the starting line
These changes would make the game more compelling...