If it's free to attend (or they require you buy beer or whatever) it's weird, but I can see the appeal. Party Passes at AT&T Stadium, home of the Dallas Cowboys, cost ~$30 according to Ticket Master.
This is genuinely a thing in the States at some NFL stadiums. Believe they're called "Party Passes", you get to watch the game at the stadium in a series of interconnected, standing only "decks". While I think you can see the game from some of them, they make a big selling point that you can...
Cool, that raises the cost of expansion even more then. And if you put the police box in the south stand you'd probably have to remove some of the hospitality up that end, which'd lose the club money in that regard.
Risk vs reward though isn't it? As there's not really good locations to move the police box or the screen you can only build back between those two points, plus to the right of the screen. How many seats is that? Maybe 100-150?