This type of thing will turn off potential new fans right quick. Reserved seating is not something were used to in this sport but I for one think it's time has come.
I used to mark off a seat real early, head for the pits & infield, shoot hot laps & qualifying then head to the stands, I usually do not even bother going up to the stands anymore, to much of the aforementioned BS going on.
The pit bleachers are much more user friendly but out of reach to most and we cannot have everyone sitting there.
To my way of thinking everything possible needs to be done to enhance the new or casual fans experience. What to do about the dumb a.. drunks I do not know.