I've been playing through this mod, and I love it so far! The full, competitively-structured teams have forced me to really think about teambuilding (especially in the early gyms!), and having the DLC immediately available gives you a lot more options to work with. It's been right in the sweet spot for me, difficulty-wise--it puts up a fight, but never feels impossible.
The only thing I'd complain about: I've done two Hop battles in a row now where he has the same team, and looking over the documentation, it looks like he keeps that team for the rest of the game. The movesets are more refined, but it's always the same mons. I'd love to see some more variety. The whole point of his story is that he keeps trying different team compositions until he finally puts together everything he's learned into something that works, and varying up his teams might make all the battles against him more strategically interesting, too.