I don't know if you're old enough to remember the 3 day festival, I and just about every pundit thought extending to 4 days would ruin things but all that's happened is that the marketing team went into overdrive and what we have now is a 4 day monster.
When, not if, they go to 5 days I expect them to find 2 more races and then revert to 6 races per day, which would maximise commercial opportunities and minimise impact to other races.
I believe they'll keep the Gold Cup on Friday (when it moved from Thursday it caused uproar, but now ?) and move either the World Hurdle or Ryanair to be feature race on Sat.
We may not want it but it will happen and 5-10 years after they introduce it everyone will say what a wonderful festival we have.....
One further thing from next years festival, I hope there's a breakthrough trainer who records a maiden festival win, I love a rags to riches story and would hate it if Mullins, Hendo, Jonjo and Nichols bagged all 28.....