Xcelerator being closed is frustrating but at least we know there is progress and some things are out of their control. The REAL question mark right now in my opinion is Montezooma. They never really officially announced what they're doing to the ride in detail, never released any concept animation outside of new station theming and a glance at the trains. Nothing has visibly changed in a year and the park has hardly acknowledged the project aside from saying it wouldn't open this summer. I have to wonder who they hired for that project, and I'm even more baffled why it wasn't Gerstlauer given their history with refurbishing Schwarzkopfs and a presumed relationship with the park after adding HangTime.
It's a good thing the park has GhostRider, HangTime, and Silver Bullet operating reliably. Two of the parks' Top 5 coasters have been down for almost 2 years with no end in sight.