I just get the feeling there is a lot of ignorance when it comes to people who watch the english leagues judging foreign leagues.
Listening to Woodgate choosing a best 11 between the scousers and madrid....guess what ...it was basically a liverpool 11 with Alaba , Modric and Benzema....... and this is a supposed expert . He obviously doesn't have the first idea about La Liga.
Same goes for the SPL ..... I don't know much about it so refrain from passing judgement. What I do know however is that for a country of 5 million people it seems to have a certain amount of success at european level and the people in Scotland actually enjoy their league.
I bet you the same people who slag off the SPL romanticise the "real" football of the championship and advocate not getting promoted to the top english league. Kind of ironic.
Would an all english league be better than the spl ? I guess those who remember first division football before the premier league will be able to answer that one. All things being equal I guess that was the relative standard you could expect nowadays. Better than scotland ? Probably a similar style of football. Lots of guts and passion .....basically every team would be a little more like Burnley with the odd flair player like grealish, sterling and the odd fox in the box a la Keane and Vardy.
It is also important to remember that england has a population of 50 odd million so side by side, it would likely be a better standard overall , but would it would also be less prestigious and more along the lines of Serie A or Ligue 1 in terms of global attention.