I did do a rewatch of it around SM's 2nd year, binge watching XY's first 2 episodes, the ME specials, Summer Camp arc, Korrina's arc, Clemont vs Ash and Ash vs Olympia and the entirety of XYZ (including the fillers). Sadly, my opinion on it kinda worsened, Greninja really felt useless to me in terms of how his arc went, The Kalos league seemed major of a problem than ever and Noivern and Goodra's treatment stood out like a sore thumb. I did appreciate Serena and the master class better tho, and the TF arc was even more epic the second time around so that was fun. Its still a good watch and series overall, just it fell flat in some areas which wouldnt be an issue if it wasnt more ambitious then any other anipoke series, so it falling flat hurt more. One thing I sorely felt lacking in XYZ compared to the earlier seasons were how focused the showcase of human and pokemon bonds were previously compared to XYZ kinda not hitting hard as it rushed everything along, although you can blame Game Freak for that. If XY got an extra year and more time to breathe it would have benefitted sooo much more!