^About Mr. Freeze supposedly launching backwards, I was trying to figure out what's the purpose of that? It goes backwards and forwards already. Forwards first, and than backwards... Mr. Freeze is a shuttle coaster and launches forward at first, goes through a top hat, goes through some curvey track, and than it goes vertical in the air, and than goes backwards. The biggest difference with the train first coming out backwards I see is that on the vertical "spike" in the air you would be facing towards the ground longer. This is comparable to Deja Vu's / Aftershock's first lift hill. If you haven't seen Aftershock or Deja Vu, here's a good video: http://www.youtube.com/watch?v=gSRjS1Ifah4
For that vertical spike also on Mr. Freeze, their are magnets up there, that push you up a little bit. It doesn't hold you in place (like V2 used to hold the train up there), but it's pushes the train up a little bit, and than it eventually goes. The launch for Mr. Freeze to me doesn't seem as fast as Vertical Velocity though, but Mr. Freeze is just an awesome ride.
"I've been staring at the world, waiting. All the trouble and all the pain we're facing. Too much light to be livin' in the dark. Why waste time? We only got one life. Together we can be the CHANGE. So go and let your heart burn bright"
This sounds like some idea they got from Magic Mountain's Superman. It would provide a different experience. Getting launched backwords on Superman at MM was awesome.
I would guess that the spike will be a lot more terrifying (for those people who are actually terrified by roller coasters ), because those magnets that accelerate you upwards break the natural parabolic movement, so the riders will lurch forward relative to the train, so people will think they're going to fall out of the car (similar to the forward lurch you got in V2).
To be honest, you could argue that having ANY ride go backwards doesn't really do THAT much to the ride. It's always the same layout. But it's always good to mix it up, and probably any ride would benefit from a reverse ride just from the novelty factor alone.