The stadium roofing should look more like a dome (as mentioned by others posters), but where or not it comes out that way the surrounding area of the stadium and definitely getting closer to the field are definite must haves..
They should do the following:
1st. Renovate the lower bowl area (bring it closer) ... it would be nice to have a dawg pound/lambeau leap area
2nd. The surrounding area of the stadium (walk ways and etc.) need to have a more inviting, yet doomsday feel (for opposing fans) to it. Like outside of the stadium, if I didnt know the Fins played there, you can mistake it for another team. Also, in the poor mans area (non club) ... some of that concrete look needs some life to it. The windows panels are strait, but it would have been nice if they could have also been used to reflect images (like video images or a cheaper advertising info) that you can see from the Turnpike.
3. The roof... it should be bowl like (as mentioned), but isnt there something that can make it possible to have it be LEED approved structure that may have solar panels at certain points on the structure that collects power. This can be sold back to the sounding community.
4. There needs to be a parking garage and fan zone for tailgators on game day. Like turning that dirt lot near the turpike into a garage slash museum slash bar, slash whatever and have a over pass connect it to the stadium and or have a train/tram move people to the stadium. In the off season and winter holidays (they can use it for kids and other stuff (year round).
5. If they build the roof and move the Screens into the Corners, they need to make the area under neither the screens standing room areas (supper low ticket prices or a looping concourse for large parties (similar to a balcony) ... like they do on a cruise ship (ie matching the renovated sides of the stadium).
6. While I am at it ... in the Fanzone (something they can definitely use during the superbowl and off season), they should have a IMAX theater/sports and technology hub, co sponsored by a college that services the community year round (if they even think about tax dollars ...)
I m just saying