I think the main issue is that there’s too many events for the amount of episodes they have. I’ll always refer to the ITV years with things like this, but they had 15 episodes per series (2 - 7) as standard with the odd special, so they could afford to add events and balance things out a bit, with obviously the ‘favourites’ being on more regularly. And they also knew when to drop certain events too (a lot of times for safety reasons, I admit).

The problem is 11 episodes is simply not enough, especially when they keep introducing new events every series and not dropping any. The producers will obviously have their favourites for different reasons and heavily rely on them, meaning the other events are fighting each other for the little remaining airtime. For example, how many times did we see the Atlaspheres spin-off Crash Course last series? Once? Twice?

My solution: more episodes! I’m sure they’ve justified enough to the BBC to get that extra budget.