I always thought that what works in wrestling really hasn't changed since like, the 70s at least. When I hear a promoter saying that something won't work anymore, I hear it as they're too lazy/not skilled enough to pull it off.
People try to make things harder than they need to be. There's a 25 year template of what makes money in wrestling and what doesn't. Sure, sometimes it requires luck to snag the right guy at the right moment, but it's not rocket science.