I've said it many times but our system is set up to provide plenty of good players but rarely produces very good or excellent.
Same.
We were talking about it the other day on the Bath forum, so I'll just copy/paste my response from there:
It has always been a mystery to those of us outside England why England, with all its resources, does not develop more international class players. All other things being equal, England should be producing 10 times the number of international class players Scotland does, and if there are ten times as many you'd expect there to far more top class players.
We've got loads who are ready to be on the fringes of international rugby - I'd back our 6th XV against anyone who isn't France (14 clubs).
But you get to be an established international by... playing international rugby. Club rugby just isn't the same.
England doesn't have any more international matches than any other top tier nation, so cannot just develop more players comfortable at that level.
As for kicking on to be even better - this is where our numbers count against us. Take Ireland around 2010ish. They had O'Gara approaching retirement, and Sexton barely a fringe quality at that time; but no-one else who looked like they'd ever make it. So O'Gara and Sexton it was then, and everyone accepted that. So if Sexton had a run of poor form, there still wasn't anyone else, so he played anyway, and learned, and adapted, and had all the resources the IRFU could put at his disposal, at his disposal.
If Marcus has a poor run of form, he'll be out on his ear, and Fin gets the shirt. If he also has a poor run of firm, he'll be out on his ear, and George comes back in, then we'd all clammer for Owen to come back; if we're down to 5th choice, we'd be looking at Burke, or Atkinson, or Bailey, or... To the point where our 4th/5th choice players often start checking around for eligibility elsewhere.
The Irish especially, but also the Welsh, Scots, Italians feel loved, valued and are nurtured to get the absolute best out of them. The English are 4-5 games away from the scrap-heap. When we do finally get someone who gets given a lot of chances (take Dombrandt for example) we fans complain that he's picked ahead of a different option (like Mercer, Willis, Earl, Barbeary, Cunningham-South etc). When you've got 6 valid options to choose from, you're only going to get ~1/6 of fans agreeing with you initially, and the other 5/6 will think you're an idiot - you pretty much get 1, maybe 2 international windows to prove that you know more than the armchair fans.
Add to that, the lack of cohesiveness down the pyramid, where all the Prem teams play different game-plans to each other, and the England management get barely any say in anything the clubs and players do outside of England camps.
Which also means that we don't scout overseas for any additional talent (clubs do, RFU doesn't).
The players get resources whilst they're being picked, but they have to share them with 2-3 others. And if they're rejected for the next new shiny option, they get nothing.
NB: This is not a "boo hoo, poor old England" - it just trying to explain my opinion of some of our down-sides.
I'd ETA this to point out that Dombrandt didn't get as many chances is my instinct suggested - 9 starts and 900 minutes from his 20 caps - it's just about enough, but makes me think I was calling for his head too early. My bias was always Willis or Mercer - so I was absolutely in that 5/6 who needed to be convinced, rather than willing to give him a proper chance.