Firstly I have to come clean, I'm from Doncaster, in that respect an outsider.
I was working on proposals for Bramall Lane back in the mid-nineties and the council were urging us (the design team and SUFC) to look at options for moving the club to Don Valley Stadium. Of course, multi-purpose athletics/football stadia are impractical and the trend is to abandon them for football hence Bayern leave the Olympic Stadium, Ajax likewise, Juventus something similar etc. etc.
But the problem is the councillors didn't know that. Further, Don Valley Stadium was a poor design pretty much aping the style of well known architects but actually (badly) designed by the local authority architects department, pastiche if you will.....
The same naivety was shown when the council decided to host the World Student Games, I really think these people thought it was a much more prestigious games than it is.
THAT SAID,
As an outsider, demolition of Don Valley looked like grandstanding (intended) by a labour council taking a stand (again) against austerity measures of a Tory government. The result, they cut off their noses to spite their faces.....DUMB ASSES.
I would always disbelieve stats emanating from cretin councils and that leads to my more general point.
There is a brain-drain from South Yorkshire (certainly from Donny and seemingly now from Rotherham), principally to London. So don't expect the councillors, police chiefs etc. etc. to be actually competent, of course not they are too thick and uneducated. Don't expect reasoned calm decision making.
Do expect gross mistake-making, Do expect an inability to handle political-correctness and Pakistani rape-gangs, and DO expect building and demolishing athletics venues without even trying to market them properly in the name of economising.
I haven't gone into the accounts but I wouldn't believe what the council say about the cost/benefit analysis of Don Valley Stadium for a moment, I wasn't born yesterday.