Regarding Northampton's possible fan base, you may get some banger/stocks fans attending? Much of it will be down to the efforts by the promotion. 

Thorsell has had offers from both Ipswich and Northampton, not sure if he’s agreed a deal with either though, but info was he wants to ride in UK in 2026

Ideally, they'd pick the other 4 PL clubs off one by one, cut the train wreck that are the other promoters adrift and go their own way with the future of Speedway while the other clubs continue to run themselves into the ground following their business as usual model. 

Reds are reportedly using their lights in the new stadium so I was informed by someone well connected with the club. I believe Comets will be installing floodlights but nothing has happened to date. There are 7 weeks untill the first home meeting . The clocks go forward on 29th March. The reported sunset time on 4th April the date of our first home fixture is 7-52pm . 

A reincarnation of Allied Promotions perhaps?

Another point which I suspect and I have been told it too is that it is mayfield putting the money up for this too aswell as Ipswich so what if they do lose their arse on Northampton Where does that leave Ipswich ?but then again if Northampton fails so too will the premier league