Finally saw it this weekend. I am someone who knew nothing, nada, zilch about the source material and when it comes to anime or magma overall, I'm the villiage idiot around here.
Taking all of that into account, I found myself actually enjoying this. Not a perfect movie by any means, as some of the characters I found to be one-dimensional, not to mention some slow spots throughout the narrative. However, it is the giants that steal this show! They more than compensate for any sins this movie has. VERY frightful looking, not to mention, much more interesting than what we got in "Jack the Giant Slayer". I recall Shinji Higuchi stating that "War of the Gargantuas" was a favorite of his. Yes, as others have mentioned, I could feel a Gargantuas influence injected for this movie.