After I read HoX, 2 books seems out of place in this new era for the Wave 1: X-Calibur & Fallen Angels.
X-Calibur because it's not related to the original British(except Betsy) or the Claremont's reformed team. What I have to say about it, it's not X-Calibur without England as background.
Fallen Angels it's too weird to assemble this 3 mutants and the plot.