I am frankly terrified of what is going to come out of that process because I have very little faith that the people in charge have the ambition necessary. I don't know them, but that's just my feeling based on the way things typically go in the city.
There is immense potential for stampede Park to be a really special place year round, but to really unlock that potential would require a great deal of ambition and creativity because it is currently a wasteland and needs a lot more than just a minor rework. Imagine Tivoli Gardens in Copenhagen or Millenium Park in Chicago. That's the kind of scale and ambition we should be talking about. Activating the Park for as many days of the year as possible should be the number one goal, and that is a monumental task that goes far beyond basic public realm improvements.
It requires a total rethink of what the grounds are for and how they are used, which also means a rethink in how the stampede is operated and organized. If they are not willing to seriously engage with that stampede question then I don't see how stampede "park" can ever be anything more than a giant empty pit. The current format for stampede necessitates a giant asphalt crater for 320 days of the year which at this point is just unacceptable.
As with most things, I think if the stampede were serious they would hold a design competition. Alas, those basically never happen here, which means we as citizens have to nut up and accept whatever those in charge decide to do.