Wonder if they'll have to reinforce the structure a lot? I mean, given that they increase the height of the lift hill to 200 feet, that's a 25 % increase, which would lead to a roughly corresponding increase in speed throughout the layout. The various twists and turns of the ride have a fixed and not very flexible radius, so the higher speed would lead to higher centrifugal forces from the train as it passes by (this is probably a terrible use of the term "centrifugal force", but it illustrates the point). To riders, the sensation of this force could be negated with higher banking, but the structure will still take the full brunt of a multi-ton train going around the curves a lot faster than it was originally designed for.
Of course, RMC could always raise each turn a little so the train speed stays the same, but they'd have to build up the structure even more for that, I'd imagine. Or since the steel track is stiffer than wooden track, the forces would be distributed along more of the structure at any time (just like a ski will distribute the pressure from your foot on the snow, so you don't sink through it), so reinforcement might not be necessary. Then again, steel track is heavier than wooden track, so you'd have to account for the extra weight somehow...
And with the reinforced or at least enlarged structure comes the question... will they have to dig and pour new footers? Of course, the force exerted on each existing footer could probably be doubled or tripled without much trouble, but they may be awkwardly placed in relation to where they'd have to add new beams.
Thinking this through, I suddenly understand why they're taking the whole next season to build this, even though the coaster is right there already.