Super-1, Zeronos, and every Go-Onger everything.

Showa
Vul Eagle
Red One
Red Flash
Red Mask
Red Falcon

Heisei
Ryu Ranger
Kiba Ranger
Red Racer
Mega Red
Mega Silver
Time Red
Time Fire
Gao Red
Gao Silver
Hurricane Red
Shurikenger
Deka Master
Geki Red
Rio

A series of Gattai.

A platypus. But seriously speaking, I'd like to see Big Chill from Ben 10.

I haven't said it for a while, so I'm going to say it again.

Saga.

Also, Zeronos Altair Form, and since they don't seem to be doing the Den-O figures in any particular order, lets have Liner Form next, it's my favorite.

In order:
Imperor and Mega/Giga/Omegazella (Forgot which was actually his Contract Monster)
Odin and GoldPhoenix
Ryuga and DragBlacker
Everyone else from Ryuki
Arc (Who wouldn't want a 9m tall Rider in Figuarts form? :P)
Gattack Masked Form (Dem Shoulder cannons)
Den-O Wing Form
GekiRed
Rio

Kamen Rider Blade figures of the main four riders and some DaiRanger figures, preferably ALL 6 rangers.

Oh, and Blade King Form, you cannot have figures without his King FOrm.

Showa: All the bikes
Kamen Rider Decade: Kivala
Kamen Rider W: Revolgarry and Splasher Unit
Kamen Rider OOO: Seriously... Ridevendor -_-

There you go, you missed one :P

GoGoV is the top one that I want. I would buy all 5 of them, no matter the cost nor where I had to go to order them.

The Go-ongers would also be very cool.

The real long shot I want is a Gatezone to go with Black Rx! :D