>>184203578>shitty sequels making him a retard>bad jobbing endings>poor choice of motivation with Goku
Really, these were the things to avoid. The first is easy enough (don't have him crazed enough to confuse Goten for Goku or anything similar). Making him a pure simpleton didn't quite do the trick, but it is still an improvement over what Broly degenerated into (not what he started as *ignoring the restrained state, which is what Nu-Broly ends up being naturally*).
The second is partially avoided, but they forgot to make his full form shine before shitting on it (couldn't even do him the favor of making it a close finish). Still better than half-dead Goku using energy of other half-dead people (who together couldn't do a thing) to one-shot the full health villain.
The third is completely avoided (but then tries to make them friends *stupidly asking to be called Kakarot, which is asking for jokes about the old mistake with him always speaking in that word alone*). Good for them. Then they forgot most of what made him appealing while fucking up a variety of other things (even wasting a bunch of runtime for Minus trash).
NOTE: May as well have completely deviated while they were at it.