This should be really positive for english clubs. A big problem in this country is that most of the youth sides are made up of kids that are bigger, stronger or quicker than the others of their age, which means the better techincal players often get overlooked (how many players have been called too small to make it in the prem over the years, multiply that by lots and you'll get to the figure that are rejected lower down).
1 of the key factors in barcas recent success is that they've taken technically excellent youngsters and taught them how to shield the ball, tackle, etc despite not being as big or strong as others. Messi, Iniesta, Xavi and Pedro are all regulars and they're all small guys who have learnt how to use their size to their advantage.
Hopefully seeing sides like Ajax and Barca at the lower age groups will show the english sides that there is another way. It's only when sides really embrace this cultural change that the technical qualities in this country will improve.