Posted December 15, 2017 by pfirsich
Yes, there is. It is easier to do them perfectly, because you can buffer the airdodge in the jump squat. Also turning around only takes 1 frame and all attacks turn you around instantly too (if you use the right control stick), so wavedashes are a good bit less useful (as in: less necessary).
Yes, press B (gamepad) to open the player menu and adjust your controls. Various input devices are supported via custom mapping and calibration!
You can use a GC controller by using unofficial drivers for the Wii U adapter (http://m4sv.com/page/wii-u-gcn-usb-driver) or by using the PC mode of the Mayflash adapter. But sadly the Wii U/Mayflash adapter will not work natively, like they do in Dolphin (yet?).
So far the netcode is implemented in a way that only enables NAT traversal to one other computer. If you wish to play together on more than 2 machines (you can still play 2v2 with 2 people per computer each), you need to forward the port 40433 (UDP) manually in your router.