I have one word that sums up how I feel about this:
Why, of all countries, would they think of putting this in Saudi Arabi? Why are they going through with this? Why not Dubai as that would be a FAR more logical place for this park/coaster? Unless I'm missing something I don't see a huge tourist market for this. I don't see anybody turning to their wife and kids and tell them, "Pack your bags and load up the van! We're going to SAUDI ARABIA!!!!!!"
I don't care how awesome this ride is. I'm not going. This ride looks ridiculous in that it looks like a pipe-dream design made on RCT3 by some kid hyped up on Monster and a Snickers bar who wanted to make "teh world's tallest fastest and SCARIEST and most Loop-de-loopiest ride EVAR!" It looks fun, but frankly ridiculous in that sense.
Again, I would like to ride this, but Saudi Arabia!? Yeah, I'm not going to take chances getting arrested for sitting on the handrails in the queue. I can't believe they're actually going through with this. If this gets built before epic universe I will eat my hat.
Saudi Arabia is paying for it. Their government wants to show they can compete with Dubai. They have tons of money and are looking to spend it to show they are part of the modern/western world in their own way. Six Flags is just licensing the name and sharing their expertise on running a park.