Good point. But will Xtreme just have a cameo appearance or his own segment? I'm a little confused about that. :lol

Giant Monsters and Giant Robots.

Yeah, Japan might have a 1:1 scale Gundam, but it could never act like one even if it had the motors. As seen here.
http://www.youtube.com/watch?v=DkzQxw16G9w

Our worlds's physics make it impossible.

Wait and find out!

Alright. :D

The physics in moving something large has your average Sentai Combined mech means the movement would be even slower and more lumbering than what is shown on screen. Not to mention the powerplant would have to be equal to a nuclear reactor.

For organic Riders: Do they grow their own clothes or something?

And not really physically impossible, but who's paying for the Rider's bike's gas? While some character have jobs, others, like Haruto and Gentaro, just sit around waiting for a crisis.

Eiji uses a soda machine... Speaking of, how is there a soda machine at every crisis that Eiji comes across?

better question. How exactly did Kougami become Ceo of a company by baking cakes and screaming at people?

A little charisma and a couple of cakes can go a long way.

I dont know. I imagine it's hard keeping people when you keep throwing frosting in their faces.