I had seen the accuracy value used in X-Pirates, but it was confusing as it looked like it was setting an external accuracy value--example: 50% accuracy means 50% chance you perform the psi attack calculation and 50% chance it is skipped and automatically fails.
Are you saying that the accuracy setting is changing the attack difficulty value? For example, an attack with very low accuracy could succeed 100% of the time if the psi attack value of the unit using it is many times higher than the target's defense value? If so, that's exactly what I wanted, and thank you.