One thing I noticed he didn't cover is the music used in this game. Like you might have already seen, the bast majority of music in this game is composed by GlitchXCity, someone who does plenty of mostly alright club music-style remixes of Pokemon music. The Rejuvenation team has also commissioned original music from her to use in their game, which sound notably better than her average track.
I'm going to open with a complaint with how fucking overused 'epic' battle tracks are. Reborn uses different music for regular trainers and wild encounters in different areas. This is your track for when you fight the equivalent of youngster Joey and his epic Ratata from the start of the game till you reach the first major large wild area.
https://www.youtube.com/watch?v=mQdgu4INtFQIt's fucking champion music. It feels inappropriate, and takes away from the impact of later 'epic' music when you start off screaming like that.