@horseman a few facts for you regarding the increase in attendances over the years.
In 1985, when we won what is now called the Championship, the average crowd in that league was 8,725. We averaged 10,577. The average in that league last year was 20,172. The following year in the top division the average crowd was 19,569, and we averaged 11,009. Last season the Premier League average was 38,181.
So attendances have in fact DOUBLED in that time. Therefore it is not unreasonable to expect that we could attract far far more than 10,577 and 11,009 given similar success. And that was in the cramped Manor Ground too. Whether you like it or not football crowds have changed in their composition, with far more women and families choosing to attend. But those people want comfort and convenience and it's important to be able to provide a good match day experience (not a phrase I'm particularly fond of, but that's how it is). The Kassam Stadium does not do this but a new stadium, if designed properly, could provide everything that's needed to entice these people (hopefully converting them into regulars) while also looking after the current supporters' by providing a better atmosphere to go with the enhanced match day experience. It could also provide the income streams to pay for these things too.
To conclude, I have absolutely no doubt that we have the potential to attract crowds far in excess of those from our glory years, but to do so we would need Championship football and a suitable (new) stadium. We are not a special case who are the only club in the league who wouldn't increase their attendances if all these things were achieved. To prove that point the following clubs had the following average attendance in 1985 (ours was 10,577 remember). If they can improve their attendances so much by improving on the field, and in many cases moving, why can't we?
Wolves 8,375
Huddersfield 7,238
Crystal Palace 6,446
Fulham 6,179
Middlesbrough 5,135
Swansea 4,421
Cardiff 4,363
Burnley 4,177
Preston 3,793
Reading 3,689