Of course, but the only thing holding dash dancing back is the fact you have only 3 frames to interrupt your initial dash... unlike...30-40-ish.
Peach had a high traction dash dance, although it was much weaker then characters like cptn and marth, it still managed to serve many uses.
There would be an increase in the time frame required to perform dash dancing, but not too much to start attracting overuse. One core concept of how I would design this game is to make sure that everything is viable in the meta-scene and to break some people out of their shells, so while dash dancing would be easier to perform to an extent it would have a drawback to discourage over-reliance on it as with everything else in the game. It would be meant to compliment certain characters' abilities and those without it would generally have other things to compensate for it. I'm aware of how Melee was infamous for the strict timing and high learning curve of some advanced techniques and characters so I'm figuring out how to make it appealing to easy-mode players and hard-mode players (I'm not using "casual" or "competitive" because of how muddled those terms have become nowadays).
May 23rd Edit: This is an idea of how a character would be designed in the Super Smash Bros. console:
Costume #1:
* Palette #1:
* Palette #2:
* Palette #3:
* Palette #4:
* Palette #5:
* Palette #6:
* Palette #7:
* Palette #8:
Costume #2:
* Palette #1:
* Palette #2:
* Palette #3:
* Palette #4:
* Palette #5:
* Palette #6:
* Palette #7:
* Palette #8:
Costume #3:
* Palette #1:
* Palette #2:
* Palette #3:
* Palette #4:
* Palette #5:
* Palette #6:
* Palette #7:
* Palette #8:
Costume #4:
* Palette #1:
* Palette #2:
* Palette #3:
* Palette #4:
* Palette #5:
* Palette #6:
* Palette #7:
* Palette #8:
Costume #5:
* Palette #1:
* Palette #2:
* Palette #3:
* Palette #4:
* Palette #5:
* Palette #6:
* Palette #7:
* Palette #8:
Costume #6:
* Palette #1:
* Palette #2:
* Palette #3:
* Palette #4:
* Palette #5:
* Palette #6:
* Palette #7:
* Palette #8:
Costume #7:
* Palette #1:
* Palette #2:
* Palette #3:
* Palette #4:
* Palette #5:
* Palette #6:
* Palette #7:
* Palette #8:
Costume #8:
* Palette #1:
* Palette #2:
* Palette #3:
* Palette #4:
* Palette #5:
* Palette #6:
* Palette #7:
* Palette #8:
General Statistics: in comparison to ?????…
+
−
•
Similarities to Other Notable Characters:
*
+
−
•
How to Unlock:
* Clear Tournament Tower on ?.? difficulty or higher with ????? (?????).
* Play ??? Matches in Smash.
* Have ????? join the player’s party in the Story mode of “Expedition of Smash” (?????).
* With the exception of the third method, ????? must then be defeated on “?????”.
Entrance Pose:
Idle Stance:
Idle Pose #1:
Idle Pose #2:
Upwards Taunt:
Sideways Taunt:
Downwards Taunt:
Tournament Tower Stage:
Expedition of Smash Debut:
All-Star Mode Year Range:
Victory Fanfare:
Victory Pose #1:
Victory Pose #2:
Victory Pose #3:
Trophy Descriptions:
* Tournament Tower Trophy Description:
* Expedition of Smash Trophy Description:
* All-Star Mode Trophy Description:
Tournament Tower Ending:
* Not all characters would get up to eight separate costumes; most will likely have four alternate costumes tops.