Okay, I'm reviewing this show for anyone who hsn't watched it. I advise you to give it a try.
From a prospective view it is kinda predictable story wise. If you have seen this type of show before, you'll know the story
The characters are good in their depth but are the same old same old.
The art in this show is awesome, the mecha's background's so well detailed.
The sounds are awesome and enjoyable, they give you the sense they put there time into them to make it sound right.
Enjoyment: you will enjoy it, maybe not towards the end of the series but it depends on the person
Overall I would say watch it, but there is very little innovation, it is more a blend of multiple genres it isn't the standard mecha.