I've been trying out a "brawler" Daredevil to fight on point. Since this seems to be what Anet wants, I would suggest that they follow through on that line of logic...
In order for a Daredevil to fight in melee, its opponent must also fight in melee. So give the Daredevil the ability to persuade its opponent to engage in melee over ranged.
The third skill in Staff's auto-attack chain (Punishing Strikes) reflects projectiles, however, the Daredevil has to actually connect with the first two skills in order to deny projectiles (which means it's already engaged in melee). So adding the ability to simply block/destroy (not reflect) projectiles to the first two skills in the auto-attack chain would give the Daredevil the ability to defend against ranged opponents in both the defensive posture (when defending a point) and offensive posture (chasing down an opponent). With the range reduction of Swipe, the latter definitely needs some improvement, especially against Rangers.
Honestly, the Thief in general needs more projectile-denying ability, but since the Daredevil's Staff auto-attack already has it built in, this seems much more likely to get implemented.