I completely agree that 12.5k isn't big enough, I also agree that you would get increased crowd from promotion, however the increases are nowhere near the 5-7k. We won't suddenly get 20-22k on promotion to the championship IMO, it will more likely return to 15-16k that we had in our last 2 seasons in the championship. Just looking at the effect of promotion over the last 3 seasons, Southampton aside (won automatic promotion with a wage bill circa x3 of our turnover) and Brighton (new ground unable to compare) most teams see an increase of 1-3k, and some that is increase away crowds.
Doncaster 7200, 8800 (+1.6k)
Yeovil 4070, 6850 (+2.8k)
Bournemouth 6800, 9700 (+2.9k)
Sheff Weds 21300, 24,100 (+2.8k)
Huddlesfield 14100, 15,100 (+1k)
Charlton 17,500,18,500 (+1k)
Southampton 22,100 , 26,400 (+4.3k) (automatic promotion)
Brighton moved to new stadium for first season in championship
Peterborough 6,500, 9,100 (+2.6k)
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