Divine Might is an insight bonus to strength. That means the first up to 7 points of it are redundant with gear. It isn't what it used to be.
Power surge requires 12 fighter levels. It is nice but it is necessary compensation to make fighter builds competitive. Fighters right now are just that, competitive. Messing with power surge isn't a good idea (unless you do a quality of life change to reduce the number of charges of it but make them last longer).