Ehhh a bit minimalist
Animation is smooth but choreography is boring with very little action, and whatever action there is none of it is continuous and doesn't flow well. Dialogue is choppy between "serious", wry remarks, and plain silly like Mr. Fantastic's quips and suffocates the scenes with more dialogue than there should be action, though quite a few animes/toons do this as well. The scene cuts move back and forth too often to retain any over arching tone or pace, it's random and hectic to say the least.
Characters? Well come on...straight out of Naruto. So far we've seen generic moves like teleport/super speed, summoning, energy balls. Nothing is particularly inspired or unique and the "Master Summoner" is taken straight from Pein's summoner body.
Super heroes aren't very well represented either. We don't even see most use their powers even though most of them could wreck what we've seen the villains (or rather the monsters). Susan? Strongest of the Fantastic 4 if not Johnny, though she has been able to contain even his Super Novas. Once again, we don't even get to see them fight.
Since you're seemingly making this into a series it needs some work.