We also had this thought when we first walked down that path too! It's right at the edge of the park though and there's one or two houses right at the bottom of the valley, so as to whether they'd be allowed to build a a traditional GCI or GG coaster, I'm unsure. If not... well, there's always RMC (only their true woodie, no I-Box) or Intamin! Tbh, I really wouldn't care who constructed something out of those four manufacturers, because regardless of the coaster type, that location WOULD make for a superb ride. I assume they'd have a lift starting in the car park by Air and have the ride brought up as high as it can go in the trees before letting it shoot down the valley. Once it gets closer to the boundary it'd have to turn and sweep to the right to carry on going a little more, start to head up the other side towards Rita and Th13teen and then turn back towards the car park again (the hill that Rita and Th13teen are on is a good few meters taller than the others side, so I don't think it'd make it too far up towards Rita before it'd need to turn back around). I've been looking at plans of the park, as well as height data to try and work out what the park would do if they ever attempted such a ride. As much as I liked the original woodie design that had one lift either side of the valley, I can't help but feel like there could be something that has more to it than just two big drops and lots of slow and pointless meandering through trees in between. Trying to recreate the terrain in No Limits isn't too easy though!