I'll just about buy Spurs as the exception that proves the rule. Six years in top 6 with 36k capacity is a fine achievement but surely their acknowledged need to increase capacity does prove my point: you cannot SUSTAIN a top 6 with a capacity of 30k. Post is about how good we can go; We can go...
Realistically, consistent top 6 requires a stadium with at least 50k capacity. Its's not the money, but the kudos and recognition that the larger clubs have that is impossible to generate with 30k capacity. And, of course, to have the fan base that will fill it regularly. We all hate plastics on...