Reasons to eliminate the balance shafts:

1. Reduce the complexity of the engine. Less moving parts means reduced failure points. This is an improvement.
2. Reduced rotating mass within the engine. More horsepower to the wheels. This is an improvement.
3. They serve no purpose other than reducing the perception of vibration. AC is more important.

And, since mine are out of phase and I have to go back in and mess with them, I might as well eliminate a potential failure point and lighten the load.

EDIT: Someone will have to explain to me how eliminating balance shafts inside the engine stands to have any impact on the power steering pump. For now, I'm racking out for the night. Gotta be up early in the morning to get started.