Few things. Had a number of offscreen PWC battles and ranking jumps, which is just lame given how little good battles we had for a while. Reserves should’ve been used at some point, probs in M8. They also missed rematches with Alain and Flint in particular. Goh could’ve been executed better, they were just winging it until project mew. They really should’ve introduced that at the start to make things more cohesive. He does develop pretty quickly too, almost becoming like Ash, he could’ve have a more gradual transition imo. His captures of Suicune and Grookey weren’t that good. There was also some weird continuity baiting early on, like eps 8/9, etc. Chloe also felt repetitive when she was just meeting evolutions, although some good eps there it felt like she wasn’t really doing anything
But the biggest is just the quality. After sitting through the whole series, it’s defs a downgrade from previous sagas. It’s a shame how many production issues they had bc it really shows. Not only was the art style less detailed but it was also missing SM’s animation, so the worst of both worlds. These got so bad where they had to do recap eps and I think the series structure was messed up bc of these issues