That average gate you refer to is one from the Sixfields in it current substandard non league state that has serious limitations that directly effects the the amount of visitors attracted to it and limited capacity forcing restrictions on admission that doesn't allow the promotion of the most attractive games to new supporters to avoid regulars being lock out.
Despite what kelvin thinks, regularly having 8 or 9000 in a 12000 professional looking staduim is better than 6500 plus in a shoe box looking restricted one.
Christ. You have just thrown a bunch of words together in the hope it makes sense.