Moving around with your character is one of the most important aspects of UMVC3. While wavedashing isn't absolutely necessary, it does offer another degree of character control and can help you move faster and more efficiently.
Tip from Demon Dethchase.
traditionally yeah, back in the olden days of COTA and such, pressing 3 punch buttons dashed, and 3 kick buttons super jumped. It helped with the flow of gameplay, and they've continued it in some capacity ever since.
Better now?
Extremely helpful.
I have a terrible habit of backdashing to escape some situations.