First of all, there are already skis on Blockland.
Second, there's a hoverboard as well.
Third, if it were a realistic snowboard, it would be difficult to make it look forward I assume, as the mouse and keyboard both steer the vehicle. You'd be looking at whatever your character was facing and if you used free-look, you would have to hold it down and let go everytime you hit a turn. And if you want to make it so that the view faces toward where the player is going, it's exactly the same as skis again.
