I agree But we would have to build similar housing for the residents, unless we go down the Liverpool/Spurs route ( allegedly). Building another tier on Whitehorse would surely be the quickest and cheapest, however you would lose the hospitality boxes if they were not relocated first, so a big nonoThe obvious way to increase capacity would be to put another tier on the Arthur Waite Stand.
There are a dozen houses or so behind the stand which could be purchased if light restriction was an issue.
You could probably put 5k on a top tier with some more executive boxes and that would give us our 40k. The boxes in the Whitehorse could then be removed and add some more seats to that end.
It's all about money.