Sadly, they have played this game before. Put in I-305 at KD and didn't get the return. Thought they could make Carowinds the CP of the south and Fury barely moved their needle and slowed down the spend.
Maybe it will be different in Texas, but I think Spiegel pointed out once that parks started getting better handles on returns around the time Kingda Ka went in that it barely moved the needle.
For most parks, the capital spends are to maintain the attendance and some nominal growth, but if they expect Texas to have a 20% increase in attendance this year or something more than say a percent or two, they will be disappointed.