"Mech Cadets" is not the generic kids show it may resemble at first glance. It has depth and heart(ache) from its character development to its plot progression. Theirs is a world ravaged by loss at the claws of the Shargs and the show refuses to shy away from presenting those elements, instead using them to strengthen each characters story and provide meaningful motivations for those characters' actions. Mech Cadets also does well at integrating an animation style that doesn't feel childish and, despite some choppiness in frame rate , possesses laudable detail (especially in regard to its mechs and Kaiju) and vibrant special effects. Vaguities such as the absence of a more dominant and numerous military defense do plague the narrative, but are likely to be overlooked in favor of the raw emotional force of the voice actors' character portrayals and the story itself. It's world-building lends hope for further exploration as there are numerous questions, especially regarding the mysterious Robos and the menace they face, pleading for answers.
In Short: "Mech Cadets" is surprisingly emotional, suitable for any audience, contains detailed animation with high quality effects, open world-building, and most (perhaps even all) plot weaknesses are easy to dismiss in favor of the shows powerful storytelling.