Dark Knight Class

[Rapidghoul]

The Will save progression was the show that strong mind and force a will is required to survive the training for the class.

I think the point is that it doesn't follow a regular progression of saves. Strong saves (like the class's Fort save) is level/2 +2, weak saves (like the class's Ref save) is level / 3, but the Will save is a mix of the two and follows no pattern (level / 3 +1 at times, level / 3 +2 or +3 at others, jumping up at random levels). If you want to have the will save reflect a strong mind and force of will, make it match the Fort save.