As others have said, it doesn't really matter who the manager is. The riders are quite simply not good enough to compete at this level. All the talk about track conditions is drivel really. Do people not think the Danes and Swedes would have been able to cope with a grippy track? Top riders can ride any type of track.
The likes of Scott, Bomber and Lee Richardson might have good averages in England, but that's in a poor standard Elite League. In Poland and Sweden they are no more than second-string riders which is a fair reflection of their standing on the Interantional stage. Likewise Stead and Allen would be reserves in the Swedish and Polish leagues. That's not being disrespectful it's just a fact.
Tai Woffinden is the only rider who looks capable of being a real top rider but lets be honest, he's really an Aussie. There are some very promissing young Brits like Jerran Hart, Andrew Tully and others so there is hope but the likes of David Howe and Lee Richardson were top juniors who have not really cut it. Certainly agree that the competition for the good youngsters isn't strong enough. There are also far too many sub-standard foreign riders riding at all levels of British racing and far too few young Brits competing in the Elite League. The situation wont improve until the BSPA do something about that.