Hello and welcome to our small community, WGB. It's always great to have additional people working on finding a solution to our lip dilemma and it would be interesting to see your compiled research. I'm convinced that somewhere down the road we will find a way to adequately resolve whatever is happening with our lips.
Try not to get too discouraged with everything; until we can get to the bottom of this, it seems like management has been the key to effective coping (most people tend to develop some sort of moisturizing/exfoliating/protecting routine that fits in with their peeling cycle while at the same time minimizing the impact that this has on the rest of life's activities). Welcome again.
P.S. Currently, this EpiCeram emulsion sounds promising.