Walking cycle Jansen beach-animal mechanism.

Many of the problems I see when building a Theo Jansen mechanism for human power have been solved in the design presented in the video.
There still remain some major issues :

• Theo Jansen uses plastic tubings with some flexibility in his "standbeesten" (beach-animals).
• The "strandbeesten" are relatively light.
• "Standbeesten" have many legs, reducing the vertical motion of the body
• Steering a multi legged beast is difficult. My design has uncoupled for and hind legs allowing the cycle to bend in the middle ...
• The Theo Jansen Mechanism requires little power as you can see from the wind driven designs, will this be true for the heavily loaded cycle also?
• Can is walk at any speed?