I agree as i pointed out in my post, but it must be possible to put in a tier like the new boxes in the South Stand (which does not run the width of that stand) without altering the roof structure. It may even be possible to have a slightly deeper level hence seating more fans.(by overhanging...
A tier like the one in the South stand must be possible, with perhaps a deeper tier housing more seats. The additional Toilets ect could be in the new office space and would not impact on the lower tier. Not possible to build the whole width of the North Stand but it could probably seat up to 3-...
Nice little tier like the one in the South must be possible. I wonder how many it could seat? 3-400 max considering it could not go the whole width of the North.