I'd love to see it too,so i'm in agreement to an extent.......i think the problem arises with the 'middle ground'.The clubs you mention can develop players without too much consequence or disruption to their ambitions (although that has gone tits up this season for Southampton).
We have to maintain a level,we have to have a squad of players that are reliable and consistent and have the experience when,like the situation we are in now,we need to dig deep and and find the way to keep winning.We simply can't afford to be babysitting or developing youngsters when so much is on the line,hence why we have chosen the current methods of loan and/or buyback.
We need to bring in players that can usually walk into the environment and perform having proved it elsewhere.It's a 'price we pay' for being so successful.
As for the two you mention.......i agree,top talents,and both need that experience i speak of next season.