I will preface this by saying I am not an architect. The issue is the Jacobson building would cause significant sight line issues for those in the lower level as it sits if the seating was bowled. Maybe you could bowl in the lower level leaving the walkway for the teams. But the seats higher up will still probably have an impeded view. Could they turn the corner sharper to mitigate this? For the upper level run the seating a bit further towards the center, maybe to the edges of the jacobson building, and close the gap with the jumbo tron. Or run seating the entire way across (don't know if this is possible due to the support that would be needed) and stick smaller screens in the north corners.I like the looks of it. I think if it were more massive people would have a lot less issues with it. As the rest of the stadium has grown up and expanded, it's kind of been the last remaining piece. I think a good architect would be able to tie into (either physically or thematically) and make for a pretty interesting structure.
Now this option next option would likely be much more expensive, but maybe less expensive than demolishing the jacobson and building new. Lift the Jacobson and Move it to the north a little, just far enough that if the north endzone were to be bowled in the back of the lower level seating would be equal with the south end of the Jacobson. Pretty much the same distance from the field as the sukup building in the south endzone is currently. You would do the upper level seating the same way as described above, bowl it in over the team walkways creating tunnels and close the gap with the jumbo tron. Again not sure how the support would work with the seating hanging over the walkway or if it would even be possible.