[SuperSajuuk]

I feel like Crystal Maze went through a cycle of needing a refresh after every 3 seasons.

We had 3 seasons of Industrial [S1 to S3], and then from Series 4, that was replaced with Ocean (with other zones getting a bit of a refresh in other ways). You'd feel like a Series 7 would need to do something different with a zone (ie replacing one of the existing zones with something else), and if the budget or interest isn't there [because they have to keep designing new games and can't reuse them, although obviously newer series were using just modified versions of old series' games anyway], there's not much point trying to continue the series.

I think Ed certainly added a good amount of "lore" into the maze, for his time as Maze Master, and I always liked the occasional "night-time" Aztec to add something different to the series as well, but thats super minor and pretty much dependent on whether Aztec is the last zone or not.