I never liked everything about G-Revolution and here's a character that stops it from being top tier.

Hiro is the older brother of Tyson, only mentioned once previously as a throw away line in season 1, Hiro makes his full debut in Season 3 starting as a masked blader named Jin of the Gale watching over Tyson like a hawk to train him in the shadows later emerging and quickly becoming his coach in the championships then switching sides to BEGA to setup a new team to push the Bladebreakers further.
The thing is he wasn't needed, the shock of having his teammates abandon him so they can take Tyson's title and being forced to work with Daichi is enough of a learning experience for anyone especially when you consider how much of a jerk Tyson was about the whole thing to Ray, Max and even Daichi, this is nothing new for Tyson, V-Force started the same way and Tyson needed a rival in Ozuma to snap him out of it, in fact why didn't Ozuma show up in G-Revolution to knock some sense into him? Be a much better experience than big brother Hiro, this is why leads rarely have siblings as it leads to some dumb decisions in the narrative, this is quite prevalent with how the other Bladebreakers react to him, especially Kai who fires a beyblade near him in disgust for not letting Tyson fight.