If there's a run button it either needs to be a dash like MegaManX or a constant state like Super Mario. Having to repress the button every landing and every turn around is annoying.
Where is my momentum going [related to air control]? Sometimes I get to move forward smoothly and continue moving. Other times jumping off of things and even landing kills all my momentum. Momentum is so very important in a game like this especially because the movement and fall speed is very slow/floaty.