Does it flip you more than an S&S 4D spinner?
I don't know, as I've never ridden an S&S 4D spinner. 2 out of my 3 rides on Green Lantern, I only flipped once. The third time, I flipped about 3-4 times, but it was a painful ride. It has awkward restraints that slam into your shoulders, stomach, and groin on each of the drops.
Supposedly, Intamin improved their design on the 2nd-gen ZacSpins (GL is a 1st-gen). I wonder if the park can fit GL with new cars?
...or just tear it down.
I never got to ride it when it was at SFMM, but from what I've heard, the new Premier trains are what ruined the ride. Maybe the park will buy some new trains for it, like they did with Mind Eraser?