First, the bears. Basically, just a bear player type. It should also be available as a vehicle, and be rideable in both forms (much like the horse). The color of the bear's fur should match that of the player's torso. I also think it would be cool if there was an armor plated version, just for the hell of it.
(I'm sure you can guess what movie I just saw.)
Next, autogyros. It would be cool to see an autogyro in Blockland. It would be great if it was as easy to control as the MAS Swarm Fighter or the Fierbird. Also, in addition to a realistic autogyro, one based on the one in Castle of Cagliostro would be great.