So not even build and use and keep up for 24-48hours?You’ll still see it, either looking from the ground or even more so when you’re looking at the stand from behind. There’s not a chance that that would get national heritage approval.
Any new works would need to be complementary, and it’s just easier to mount cameras on an adjacent grand stand and have the vision off centre. Either that or have cameras on the opposite wing to use for night games only.