It could be so much better than that, but remember it came to life in 1981 (?) It really was top-notch back then, and I love it in the same way I love the old classic dark rides like various Haunted Mansion's out there. I wouldn't want it to change a bit.
I can see where people dislike it, but it is still very popular and I still love it the same way I did as a child.
"Your invited, to a picnic..."
Also, Mind Bender sporadically operated two trains late last year but when they did all hell broke loose (which is why it rarely occured). I don't know all of the mechanics of the ride, but with new brakes put in, I'd say it had problems with the control or braking systems. Apparently that has been worked out now.
Funny, last year at GaTech night, it operated 2 trains with only 5K in the park and the next day, with 3 times that amount, only 1 train.
I'm pretty sure Mind Bender's new trains and parts didn't come from California, unless you are talking about the new-for-2005 train. That's the only thing we've gotten from the west coast AFAIK