Blair Witch and Platform scream low budget and need to be retired
Platform required a lot of money for the route to become usable. The village section (ie: the best part) didn't break the bank but also wasn't cheap (it probably cost more than 3 mazes did last year). There were more plans in place for it to grow and gradually get better and better whilst also changing, but they weren't realised.
Blair Witch is fine as a filler attraction imo. A spooky, not particularly side maze to do which has a very different feel to the rest. It's cheap, it's simple, but it's also different, and Fright Nights needs variety.