I think what would significantly add to the realism of this model stadium would be if you could have miniature supporters in there. Maybe Airfix could produce some - a bit like those small plastic soldiers they made - so that we could re-enact the terrace battles against Palace etc? You could further enhance the experience with model policemen, a couple of police dogs and the bloke who carried the lottery board around the pitch at half time?
Subbuteo sold fans, police, stretcher bearers and others.