There's always guff spoken about acoustics, roof keeping the noise in etc... But at the end of the day, fans create an atmosphere not stadiums. If you look at a match of the day broadcast from the 70s or 80s, the atmosphere beats the pants of what is currently on show at Spurs or any other premier league ground. Even though the facilities were open air behind goals.
Spurs charge £2k for a season ticket in the middle section of the wall behind the goal, and about £1.2-£1.5k everywhere else. The atmosphere is tame because of it.