So, a couple of things that got me to go about subtypes:
1) I've seen it posted that there are 2 subtypes for each type. No, rather 4. Never mind, 16...wtf? which one is it?! Can't we just say people are different?
2) If they DO exist, then should they not alter relations? If two people act completely differently, then how would their relations with others be exactly the same? Unless of coarse the differences within type are VERY small...
3) Will the 3rd Batman be better than the 2nd?