While not wanting to get anyone's hope even slightly airborne, it would be to established stadia, where planning permission is presumably still in place, that the Premiership should be looking to add to their numbers.
Brough Park, while requiring serious funding to reinstall track and fence, etc, would -- if promoted jointly by the BSPL themselves (as was West Ham in 1964, which was a huge financial success despite the team finishing bottom of the last-ever -- old -- National League) might just work, not least by raising the numbers in the current Premiership.
To those who say that the stadium owners wouldn't want it -- everyone has their price........
Recalling West Ham, which paid off handsomely when it was refloated after a nine-year break and later on the recent Oxford revival -- and the huge crowds that came back to Glasgow in 1988 after the city had been without speedway for 16 years, it might not be the worst idea.
In a major city. After a five year gap. Just saying.......