I have noticed the older I get the less stuff bothers me, or again, maybe I am just too tired to notice
I don't like wing-droop, that is a given but I simply do not keep the ones that do that on my kids.
Hmmm, what else, I do not like woven prints on fitteds. I have tried to like them and while I will not sell them off if they are woven print I just like knit or plain hemp, etc more.
I prefer hidden snaps, but it does not stop me from buying dipes without hidden snaps. I have not noticed super huge wings on the diapers that do have hidden snaps.
Tags, got to admit I do not like diapers with really huge showy outer tags, especially when they are on the front of the diaper. There is one maker whose diapers with tags I really like. Her tags are sewn to the soaker inside not touching baby. I think that is really clever and cool.
Guess I need to gain a few years, that is still quite a list. I would not really call them peeves though, just my preferences. I certainly do not spend energy letting these things bug me.