This should not be a question to me but I will try to answer.
I think it applies to at every level but correlation is with season ticket holders (I have 2553 currently), of course after promotion and during PO games it is different.
Check my area how many LT and Bleachers I have - so I cannot go super expensive on them as they would never sold out.
It was an idea to build area like that years ago not sure what is current trend as I have been off forum for very very long time.
As looking for promotion this or next year I need to catch up with all the "news".