Who says they won't? There's nothing out there saying that they won't redo the ride and add crazy banked turns and completely change the layout. Heck, if Son of Beast does re-open, it may not be the same ride at all!
.Texas Giant was a once a good coaster. Then it became really rough, so they re-tracked it to make it what is used to be. Robb Alvey went into a huge thing about this. Son of Beast was never as good as the Texas Giant and it probably never will be. Like he also said, it's the structure that has failed. Re-tracking it wouldn't make a difference. I think some people hate to admit it, but there's not much the park can do.