The Bioman/Megaranger suits and electronic technology.

Everyone thought of Build as the best Rider System to be brought to life in reality?

Fourze driver would be a better option. Cause the Astro Switches are actual tools that can be used to get work done. Also it doesn’t require fancy surgery or die and revive into an orphenoch or slowly become a monster, etc. And no, I will NOT wear the Delta Driver. I surely do not need a camcorder with a belt for a battery pack that turns people into Gollum.

So no modification surgeries?

That’s a bummer.

What about sentai and Ultraman?

Earth Power from Gingaman.
Figure out how to actually use it for the common man. Make everyone benders from Avatar.