In a large mixing bowl whisk the mayonnaise, Dijon mustard, apple cider vinegar, sugar, and salt together until smooth.
Add the slaw mix and toss it with the mayonnaise mixture until fully coated and place in the fridge until ready to use (can be made in advance).
Preheat the oven to 375º F and lightly coat a 9x13 baking dish or pan with cooking spray.
Using a long serrated knife sliced each pack of the slider rolls in half, but do not pull apart. Place the bottom half of the slider rolls on the bottom portion of the prepared baking dish.
Layer the pulled pork on top of the rolls and pour the BBQ sauce over the pork.
Place the dish into the oven to bake for 10 minutes.
While the sliders are in the oven prepare the topping by whisking the melted butter, Worcestershire sauce, and garlic powder together.
Once the bottom half of the sliders have cooked remove the baking dish from the oven and set it to BROIL.
Top the sliders with the coleslaw and sliced pickles. Layer the tops of the buns on and brush the tops with the melted butter mixture.
Sprinkle the sesame seeds on top and toast them in the oven for less than 1 minute until the tops of the buns area toasted and golden brown (don't walk away from the oven because the tops can burn quickly).