Both DragonBall Z and
InuYasha(IMO), while still great and entertaining, had wasted potential.
With DBZ tho, I would have liked if they had gone with the idea to make Gohan the lead and gave him a few sagas where Goku was dead and had his own group to save the world. He could have met Videl earlier and had her be his Bulma and maybe after a saga when Goten when old enough to realistically contribute in a fight, let him be a Krillin type character.
but yeah, Broly should have been canon. Tho it would have been a short saga without some tweaks(which obviously would come). Broly wasn't as dumb as Buu so they couldn't buy time or cocky as Cell to just give them time, he was just in it to wreak shyt. Kid Buu with a grudge basically. The whole saga would start with Earth being destroyed
.
But yeah, lotta wasted potential.
I wanna watch DBZ again now...