These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Hate Dumb: The announcement of this OVA has triggered a lot of flack from the fans of Shin Mazinger, who see it as an irrefutable proof that there won't be a sequel to it.
Of course, this may be completely undeserved hatred, given the rumours that SKL IS the sequel to Shin...
Some people are opposed to the series due to the ramped-up violence and sexual overtones. Those people have apparently never heard of Violence Jack or Kekko Kamen, or Go Nagai's own stated desire to keep pissing off parents' organizations in Japan.