See I put my vote to Nurse because I think she has the most potential as a good Smash character. All her specials would be some variation of a blink but with different effects. Her Final Smash would be her mori, think like a super grab. IDK she is as much of a poster child for DBD as Trapper, just not on the actual cover of the game. But Trapper seems too one dimensional to have a moveset in smash. Like what would he do? Put a trap down? Seems boring. Nurse would have a good recovery and some interesting dynamics even though all her moves would be blinks, they would be different which means she can be a mind game sort of fighter. You're not sure which special she is performing during the startup.

Also her down throw would be she puts you on a hook and can smack you around, sort of like a lock down attack like DK's ground pound.