I had my flywheel checked for flatness (was only off by 0.001), but since I am installing a new Exedy clutch I had a skim cut off the friction surface. After completing it was noted that there may be fine cracks in the hub area, so with a dremel I removed and noted that the they were not cracks as they disappeared quickly without much effort. Next to confirm I dye checked the entire flywheel for cracks (both sides) and it came back negative (I should have done that first).

Now I am left with four small area close to the hub (see attachment) where some material was removed.

I am interested in opinions on whether these minor areas can
1) be ignored, since it can be considered negligible due to material removed is so close to the center and should not have an adverse effect on balance.
2) I should try to balance with corresponding marks on the opposite side of the hub.
3) Need a new flywheel

 

Maybe it's just me, but it looks like you're way overthinking this thing. That flywheel looks infinitely better than many flywheels I've seen newly installed.

I say put it back in and forget about it.