Don’t see much wrong preparing track for home riders.Its a Professional Sport ,riders should be able to suss it out after a ride plus they  visit the same tracks every season should what to expect and bike set up. Set ups are the Modern day excuse.!!!, throttle jockeys are the modern day rider though.

What about a Swedish or Danish system? Sweden gets probably double the crowds, and more, than the UK does, so maybe follow Denmark's operating model given their crowds are more akin to the UK's?.. Guests are just a lazy way of running the sport and does it zero favours from a credibility point of view, which won't help gain sponsors from outside the  Speedway bubble.. Doubling Up isn't a problem given, as you say, different leagues exist with no impact to the top tier in the UK, and helps both tiers afford riders, and provides riders with more income opportunity... And given so few riders want to ride over here DU'ing is currently something fundamentally required...

Think mullford could be missing as in a long track event on Sunday and often they have to report/practice in the morning 

I don’t think ever Chairman. He was vice-chairman for a while but stepped down in 2011 (?) Too far back to have any relevance nowadays. 

Nobody, especially new fans would give a 💩 Doubling-Up is a nonsense argument in making the sport look 'Mickey Mouse'. There's no promotion / relegation so there is zero 'conflict of interests'. Guests have been and always will be a necessity of this sport. British Speedway doesn’t have the finances to run Polish type squad systems so that's a no no. This sport has far more important problems than some riding in multiple leagues. As far as I'm concerned, riding in the Premiership & Championship is no different to riding Premiership and Elitserien, it's still 2 different leagues with no conflict on each other.

Great idea if very limited or no doubling up & a restriction on guests. Imagine the round up/ highlights where Chris Harris rides for Kings Lynn in the premiership then appears for Glasgow in the championship with a couple of guest appearances for Sheffield & Poole. Would very quickly show just how micky mouse the sport currently is.