One thing that is clearly missing is the ambulance tunnel in the NE corner of the stadium. However, I do like the idea of the party area there in that corner. However, I'm not sure that putting the party deck right by the student section is the best idea, mainly because the people that can afford to visit the party deck will be sitting elsewhere in the stadium.
One idea could be to just flip the seating on the east sideline. Instead of the student section starting in Sec 24 and extending north thru Sec 28, it would start in Sec 24 and extend south thru Sec 20. All the alumni that currently sit in Sec 23 will be moved to Sec 25, etc, etc. instead of being in Sec 26, the band would be in Sec 22. That would keep the students in seats that are as good as the ones they have now, while also putting a bunch of season ticket holders over by the new party deck.
As for the tunnels, maybe it will be similar to the current layout. There would only be one tunnel over in the NW corner. The ambulance would have access thru that opening, along with the K-State football team. The visiting team would still have to go to and from their locker room via the stairs thru the stands, just like now.