The world record is getting close to a perfect 400, which was the level at which they changed it from one-every-two-seconds to one-every-second, back in 2001. Will it be changed again? One every half second? Every three-quarters-of-a-second?
There's always the question of language - the attempt to provide the numbers in the language of the competitors' choice way back in 2005 didn't work as well as it might, but it was the right idea and it's strange that nobody's wanted to try it again. So, will it always be in English at every memory competition except the German ones?
I've always suspected that the people who are good at spoken numbers are the people who don't review their written numbers many times, but go through them slowly and carefully to start with. I can't really back this suspicion up with any kind of evidence, though - maybe I'll gather some one day.
The interesting question is why not have other spoken discplines? Or flashing-up-on-screen disciplines? Or, well, any kind of alternative to things written on paper? I can't think what that other alternative would be, but I'm sure there is one out there somewhere.