>>14467749>Lucario with more spikes and dreds is awfulLucario already had spikes, and his spikes in the appropriate places. His proportions are sound, he retains 90% of his default form's look, and there's very few dissonant elements in the design.
Lucario and Banette are examples of good Megas.
Heracross is an example of a bad one.
In the former the artists knew the intent of the original designs and embraced it. In the latter, the artist designed to ejaculate their creative juices all over a sound design.
There's a consistency in the good designs that the bad ones don't have.