Agreed. Top Thrill is great for the "thrill" of hitting 120 mph and dropping ~400 feet, but it's over in a matter of seconds. I think they nailed it with the drag race metaphor. There's very little anticipation, and the payoff is immediate.
Most runs, Top Thrill Dragster indeed has little anticipation. I have experienced an exception once: I was in the front seat and glanced up, straight ahead, as the countdown started. In that instant just before takeoff, I noticed a number of seagulls lazily floating a couple feet above the track. Watching those birds continue across the tracks and out of the path of my face were the longest two to three seconds of my life.
Even better than that is when you're in the coaster waiting to go, and then the one before you doesn't quite make it over - so you get to watch it come hurtling back at you! (And then wait 15 minutes for the wind to go down again)