I agree with SB, most of the best looking stadiums are actually really simple and symmetrical.
If they're not going to complete the bowl, it'd help a lot if they would at least extend the NE and NW corners to look just like the SE and SW. They could take out the bleachers along with the two little boards in the SE and SW corners (we'll have huge boards on both North & South), design the walkways in all four of these corners to match, maybe add a few shade trees or whatever (would never happen, but you get it). Then you can do whatever you want on the north part with Vanier, seats, suites, etc.
Like CyberToothCat said, it wouldn't add much to capacity but would really help the looks of our stadium. Something like this.
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