Regarding the bobbing, this is a very interesting question. I puzzled a long while where the energy might be going when you stand on the pedals. I worked out it actually goes back into pedalling. The effect of front suspension is to spread the bounce produced by the body going up and down over a pedal stroke. Some may be lost but I think most is recycled. Riders think it feels lossy but the reality is less loss than thought. If there is significant damping in the suspension, then some more is lost.