Wildflower is a frequent stop for me mainly out of convenience to the train park across the street. My go-to here is the Almond Tuna Sandwich. It's a light sandwich and really a great mix of tuna, apples, nuts and maybe a few other ingredients. Instead of potato salad I would suggest getting the potato/sweet potato chip mix.
Each time I have digressed from the Tuna, I've been dissatisfied. I don't know what it is, but I don't find Wildflower to be an above average meal. I wish there was an LGO in Scottsdale!