Not using a leotard or not having a massive cleavage is a complete reasonable choice in my opinion. For me, the biggest blunder is not using her original color scheme and making the new costume look like a matrix cosplayer with a wig-on. You know, instead of making the new costume make her look like a dark QUEEN.

The animation and art style is the thing that bugs me the most, i know art is subjective but it looks cheap and generic, specially compare to the original, like it was done by a beginer user of Adobe Flash, and i know you can do good things on Flash just look at the first episodes of Wakfu