Funny film. On the one hand, it feels like they stopped trying. Rather than come up with wonky storylines to revive old villains, this is just a rework of the DBZ: Broly, one of my least favorite DBZ films. On the other hand, I kind of liked the Super vibe, this is way closer to what I figured Dragon Ball should be.
The plot hasn't changed too much from the original, only now there's a little extra padding that allows the goofier side of Dragon Ball to surface. Goku and Vegeta bump into a new Saiyan, the strongest they have faced so far. He is a formidable foe, and they'll have to go to extremes if they want to survive.
The art style is a bit more detailed, and the animation is richer. That's a welcome change, as DBZ was pretty bare-bones in that regard. It's the action that has gotten the biggest upgrade though. Where it always felt rather underwhelming, the battles here are fast-paced and flashy, and they come off completely over-the-top. Still not the greatest of course, but a real improvement over the original.