I remember when the first few books came out and I read them, I went on the official forum for the series. People were talking about the chemical/ nutrient requirements of morphing. Also, in the first book, the telepathy is mutual and in later books it’s not; at least one person asked about that and the author admitted, in a classy way, that it was a mistake. I certainly didn’t expect the series ending with, among other things, PTSD.

I did also like the author’s other series featuring an alternate dimension in the form of dreams wherein I believe yet another war was happening.

… Someone should check on K.A. Applegate.