I'd be okay with all of that, but a ferris wheel is going to be an odd fit over there. A Mickey's Fun Wheel sized ride could fit over by the water where the temporary stands are now, but the question is where do they put the queue.
Pre-Rockit, I would have been upset about the Ferris Wheel. The skyline can't really be ruined anymore so I think it would add an interesting look to the Simpsons area.