Aspects of skateboards

Aspects I would like to take into consideration:

How the steering mechanism works
Flex/Rebound of the deck, wheels
Cornering ability. Abilty to perform sharp turns or ability to corner well at high speeds.
Ergonomics- How the rider interacts with the board. Stance, height, riding style.
Speed and loss of energy. What factors/features could loss energy. What factors/features could be improved to reduce the loss of energy
Overall feel of the ride