I don't agree.
The new Stadium will be used, as I understand it, for training Riders. Those Riders will come from all parts of the United Kingdom, not just Manchester and surrounding area, so in that sense it is a National Stadium.
It will also be the best Speedway Stadium in the Country by a country mile.
Ergo I believe it has the absolute right to be called the National Stadium.
I wonder if jealousy and envy has more to do with the barbed comments about the new Stadium being styled the National Speedway Stadium.