Maybe syringes as a key item.

I'm thinking micro cassettes.

Dr. McNinja? (Sorry, been on a big webcomic kick)

Hmm. Ex-Aid. Exaid. X-Aid. X-Ade. No wait, that sounds like steroids.
And siren eyes? Does that mean they're all rectangular and whatnot?

Still, given the descriptions, I can't NOT imagine this guy fighting in a lab coat and a stethoscope, which would be immensely impractical, but whatever.

I kind of want an older Rider this time, honestly. Like Hibiki.

If I am not wrong, Fourze was the first Rider who has medical theme (Fourze Medical Module).

And then followed by Drive Type Speed Doctor, Drive Type Wild Doctor, and Ghost Nightingale Damashii.

Hmm...also, I am curious about Ex-Aid's weapons Maybe his weapon based from various medical tools.

I am going to be so bummed if this show isn't the continuing adventures of Jin Keisuke, action doctor.

That would actually be amazing if you think about it. The belt can be vial-themed, the collectible items are syringes that vary in color. You plug the "needle" into the top or side of the belt, press down the plunger and "inject" the power into the belt as it takes on the form and syringe's color.

How legit is this? The katakana translates to "Eguzeido" (lit.). Ex-Aid would be closer to Ekksueiddo (I think). I think the name is closer to Egzeid (which doesn't make much sense, admittedly).

Wait, does that mean that his name could actually be Excite? Kamen Rider Excite?

Exceed?