1) The trick here is to add lots of the vegetables, so that it really looks like salad on top of a tortilla and then the salsa is your dressing.
2) The benefit of using salsa as your dressing is that it has lots of flavor, so you don’t need to drown the vegetables.
3) If you are using kale, I recommend tearing up the kale and mixing it with a little salsa while the tortillas heat up. The acidity in the salsa will break down the kale a bit, making it more tender.