You are able to mash the dash/roll button which is very fast. It would be nice to be able to keep the momentum while jumping in order to increase gameplay variation and flow. When jumping after a dash, it feels awkward. Dash Jumping
Air attacking forcing the player to lose the momentum feels fine though.
Since jump canceling makes the player vulnerable to attacks, I don’t believe this would be too good in any way. It allows for combos like ground dash, jump, air dash, which feels great. As it is right now, repeatedly ground dashing gets tiresome and even boring after a while.