I had an idea called Kamen Rider Giga. The title is an homage to Swiss artist H. R. Giger, and the motif is sci-fi horror. As such, the Kamen Rider would have an Alien-like appearance and the Kaijin would be formed by bursting out of the chests of their host bodies.

This certainly would make for an interesting alternate universe series. I would be all over this in a heartbeat!

I had an idea a while back about a car/vehicle themed Kamen Rider. He wouyld have different forms based on different vehicles, like Racecar form being fast, Tank form having a gun, Jet form being able to fly... They would be accessed with Keys (like Gokaiger)

The secondary rider would be army themed and have two forms: Soldier and Elite- Soldier being the basic form, with a firearm like the Trigger Magnum, while Elite would have tech like cloaking (camoflage suits) and an awesomer gun.

They would be Kamen Rider Turbo and Kamen Rider Military. And they would be awesome

More vehicle based riders plz! That's one of the reasons I love Den-o so much!

i think i would go for a SD Card or CD style theme it more based on an annuversary but the Driver would be a SD card read thing where as the CD be a player each SD or CD or have Diffrent Rider and a Diffrent slot like maximum Drive on Double to accesses past Rider Forms and would have DNA themed suit or Nano Tech that has info on the past Riders

I would only be down for a CD-themed rider if the secondary rider was cassette tape themed. That would be glorious.

Kamen Rider Soundwave!

I would like to see a pure ice themed Rider. Yes we've had Tiger and Rei but they were more based off animals with an ice motif to them.

I had back in 07 I came up with a rider series was Egyptian theme to it.

Food. I want a food themed rider. He could have a Spicy form, a Drink form, and his final form would be Dessert form! His weapons would be kettle that sprays boiling water, a spatula that straightens to a sword, a wok shield, a pair of giant chop sticks that connect to form nunchaku, and a rice cooker that doubles as a flying guillotine.

And the ironic thing is that he'd be a terrible chef.