I sent in a similar proposal to Rob Godfrey in winter 2017
Run it at a Championship level with however many teams are running, split it into north/south and you race teams in your section twice home & away but also face the teams from the other region just once either home or away, so Sheffield (North) in 2019 take on Poole (South) at Owlerton, the year after it would be Sheffield who travel to Poole.
You get more local fixtures this way which is good for crowd levels in theory but you also create more variety by involving sides from other section as well but not over doing it and increasing costs to promoters and riders.
No doubling up (don't care how many riders in a team, just made the sport credible again by finding a format that works and is value for money) in order to find a way forward again instead of this constant downward spiral Speedway here is in.
If you are racing a team in your region and have injuries you can only get a guest in from the south region and if racing a team from other region you can only get a guest in from your region.
When it comes to end of season top two in each region face off for divisional titles and actually get a trophy for that achievement and then of course superbowl style final North v South which advertised well could be brilliant and of course bigger trophy at end of it.
With the right advertising and stripping the sport right back it can be great again, just got to be more radical this winter as they have just stuck with status quo for way to long now and it shows with how many people are rocking up to watch.
Not going to say this is perfect by any stretch of the imagination but BSPA have got to listen to all ideas and find out that can work for the future of the sport here, it really is that simple for them now.