The BBC are losing the Commonwealth games, possibly Wimbledon and definitely The Boat Race, after being outbid, might be the perfect moment to offer them Speedway, after all don't think TNT, Discovery or Eurosport will outbid them on that ! Might even be worth giving them the rights for nothing ,just to promote the sport ?

IMO  how well he scores and if he can stay injury free will detemine whether  this is his last season  !

Running the sport in a way that removes pretty much all authenticity of both leagues is an even worse answer to develop the sport...

Yes and you never know, there could be a tv deal by then covering the last league matches plus playoffs

Fair to say that the math of combining current teams doesn't lead to many more team than the current five of the top flight - well, eight to be precise. Then the number of quality available riders run out. Remember the  two current leagues exist at the moment because a good number of riders ride for two clubs in the two different leagues which would disappear if there was to be only one league. 

I was focusing on one league made up of quality riders including those who would  ride in GP's and/or Poland. so riders of a NDL standard and current lower second strings championship would be uncompetitive.  Thus, as you well know, Mondays and Thursday would be the only days available for teams to field "top riders". I totally agree that one league could be made up excluding riders who ride in Gp's  and or Poland as well as  are of Scandinavian nationality and instead have teams including NDL & lower second string championship riders. But frankly, such low quality, and teams of 4, 5 or six riders is not the answer as a way to develop the sport.