[quote=Rin]
So... If it's shonen action, how ridiculous are we allowed to get with it? As in, um... How over-the-top are we allowed? I mean I know it's not going to be DBZ-levels (at least not from the get-go), but will I eventually (as in, nearing the end game) be able to punt someone into the sun just because that would be amazing? >.> <.<...I am being a bit silly here. But I love the craziness inherent in shonen action manga, so I just want to know if we're allowed to go all out and eventually end up with something completely ludicrious in scale.
[/quote]

Well, as one if the original writers, I'll give you an idea of the original endgame:

The main characters each led a small militia force protecting a city from an army of villains. Each hero pushed into the enemy advance using their specific powers, and had to battle one-on-one with a superpowered alcolye(think a enemy general). After hurting them, they were teleported to the main enemy citadel for a huge final battle where things exploded, things fell from the sky and all sorts of cool stuff. 

Also my character had a cool battle in a church once. I suppose in terms of craziness it was more akin to Advent Children levels than DBZ planet destroying levels.