I didn't miss the point, actually. I know that it will be the new most sought after FP+. You're missing the point that the other poster and I were trying ot make.
Your point - that it's adding capacity of rides people want - only works if Maelstrom's capacity was never used. Maelstrom wasn't deserted. It had lines, its capacity was used. I remember waiting in quite a long line for it myself. Frozen's FP+ will be more coveted, yes, but the actual number of riders the attraction takes through in a day is not going to be significantly different than Maelstrom was. There will be some increase, yes, as I did say before (coming from potential more efficient ride system with newer technology, and the ride running at full capacity more often than Maelstrom did). But it isn't going to be an increase in actual # of bodies moved through the ride to the huge extent it's being made out to be.