You're kind of missing the point that "being able to cater for 3.3%" is currently, actually more than enough.
If we were turning people away every week your argument may have some credibility.
Sixfields as is is a total turn off but still acheived 80% capacity these last 3 seasons, so its not beyond the realms of possibility to expect another 30% plus increase had we a ground that is a whole lot less 5hite.
The current gates are subjected to heavy restrictions so its you who has missed the point badly.