I would think we need to have some form of criteria upon which we make assessments so we rank fast food somewhat consistently. Here are a few to consider ...
Taste (very subjective, but it's key)
Quality (fresh, well produced, well presented, etc.)
Value (cost to quality/taste ratio)
Environment (the non-food
experience of the place, including drive through)
Bio friendliness (healthfulness of the food)
Earth friendliness (imagined impact to the planet, efficiency of operation, source of materials, etc.)
Apparent employment practices
Wildcard (any quirk or quality unique to that place)
We could even assign a numeral value to each of the criteria, weight them and eventually calculate down to the 10-point scale. Even then, knowing the rankings of each of the criteria would be good for me to know. For example, I would want to know what places scored well on the "value" criterion more so than I want to know about the "environment" criterion. Maybe the scale works like this ...
Taste - 20 points possible
Quality - 20 points possible
Value - 15 points possible
Environment - 5 points possible
Bio friendliness - 15 points possible
Earth friendliness - 15 points possible
Apparent employment practices - 5 points possible
Wildcard criteria - 5 points possible
So if a restaurant totaled 68 points, that would then calculate to a final WRFF score of 6.8 (Wheaton Ranking of Fast Food)
Giggle among yourselves
Remember, we're not comparing fast food to our best restaurants and watering holes, but among fast food.
Chipotle -- a WRFF score of 6.6
Taste - 13 points
Quality - 16 points
Value - 4 points
Environment - 5 points
Bio friendliness - 11 points
Earth friendliness - 10 points (way too many people working at one time, inefficient)
Apparent employment practices - 3 points
Wildcard criteria - 4 points (love the music and their digital marketing)