I can see how this bike would be an alternative to a recumbent bike, to be used as a pavement cruiser, but I cannot picture how this bike could be considered a technical trail bike. For one, the wheelbase appears much longer than a standard mtb, and with increased length in the chainstays you would increase flex. Also, when climbing steep hills on a mtb, it is a fine balancing of weight between the rear wheel for traction and the front wheel to keep it on the ground. While this bike would certainly allow for weight to be over the rear wheel, I don't see how you could keep the front wheel planted while pedalling. I also wonder about the effectiveness of a suspension for on the bike due to the rake of the front forks. It seems very little weight would be distributed over the forks to actuate the suspension, plus the force of a bump would likely be on a different plane that the suspension fork is set at.

I commend the OP for presenting these bikes and asking for comments. He appears to have found issues with conventional bike designs and is offering a solution to these issues. I don't really understand Mr. Lusor's apparent attack on the cycling world though. Each to their own, I suppose.