[kamen rider Q]

Looking at the Bandai Hobby pages for OOO and the Trychaser, here's a rundown of special features (based on Google translate):
OOO:
Removable Taka, Tora and Bata medals, as well as three cell medals for the medajalibur.
Combo change gimmick! (We'll probably see the rest of his forms within a year or so given the SS version and FRS Den-O)
The animal designs on his chest are all factory painted!
Trychaser:
Tries to recreate the "texture" of a motorbike
Wire is used to recreate cables
Spring suspension
The baton he turns into a sword in Pegasus(?) form is included, along with hands to hold it
Removable control panel is included
...
I'm really hoping Lazer is next, that would give us both a bike and a rider at the same time (especially if they included alternate blank stickers for the eyes).