I'm sorry. In one of the most technically proficient games in the world you have till 16 to attain the basic skills. you will never make that gap up as an adult on Tipperary or Kilkenny equivalent players.
Never in a month of Sundays.
At senior level it's tactics, motivation and conditioning. And all three fronts it can be argued the current management are below average. Fixing these will get us to the Top 6 which is achievable.
However they can't be held responsible for skills players should have acquired 10 years ago.
That's required for the top 4