I remember someone from Halifax (think it was council) coming to Odsal and speaking to the Hams about Speedway returning to the Shay, they declined the offer and so the redevelopment took place without the inclusion of a Speedway track.
That was the 2011 census figure, still not predominant but It'll be much higher than 20% The fact is that Odsal never really attracted paying crowds for league racing. it was all but dead when it closed.
While there's some truth in that, it does appear to broaden the grey line between sport and entertainment and that's something that many have struggled to find credible about Speedway.
If I were an Island fan (I'm not) I'm not sure I'd be happy with a few Mickey Mouse events in place of league racing. Anyway good luck to all concerned.