I actually thought Joseph was quite good- many times he did well in defense- often covering for other players (especially on the drift) and always seems to make the right decisions. Not his fault he wasn't given any good ball.
Hartley is woeful around the field (compare to Best, Coles, Moore et al.) and has to be dropped.
Ben Youngs is just not good enough, a slick pass is the no.1 priority for a scrum half.
Marler doesn't offer as much around the pitch as much as Corbs/Mako, if his 'point of difference' over Mako is not evident, then there is a case for him not even making the 23 when Corbs comes back.
Burrell is just not good enough.
The breakdown is, and has always looked less than average, and it seems that England rely on the pure power of Vunipola, Robshaw, Kruis, etc to blast players out, at every ruck it seemed touch and go whether they would clear out in time. Fundamentally I think speed to the breakdown is really bad.
Are questions going to re-emerge surrounding Robshaw? For all his heart and work rate, throughout his tenure, Englands back row has never looked balanced, and the big wins have always seemed to occur because of an individually brilliant performance from an individual or couple of individuals (Wood, Launchberry, Cole etc) rather than the cohesive work of a balanced pack.
I fear Robshaw- while being a great player- is there to the detriment of the pack as a whole, and is looking a bit like Lydiate in his style, ie. tackling and work rate is unquestioned, but unlike with Warburton+Faletau, England cannot make up for the fact that he is not quick enough, not a line-out option and not an exceptional ball carrier.
Let me underline this in a rather simplistic way.. looking at the back-rows of the top nations:
Lydiate, Warburton, Faletau. Although Lydiate is one dymentional, he is balanced by a proper scrounger and a good line-out option, both Warburton and Faletau are reasonably nippy and decent ball carriers.
Kaino, Mccaw, Read. Thats probably two good line-out options, at least two good carriers and plenty of speed
O'brian, Heaslip, O'Mahony. Two good ball carriers, at least 1 (probably two) good line-out options and plenty of speed.
Now England.....
We've typically had either:
Wood, Robshaw, Morgan or Haskell, Robshaw, Vunipola. The first has one good line-out option, but only Wood offers any semblance of speed or breakdown threat. The second has decent ball carriers, but no line-out option and they all have the speed and agility of a tank. It pains me because in the premiership there is a huge pool of talent, and yet the back-row seems to continually under-perform in at least one facet of play- and usually have to be bailed out by an exceptional lock pairing or individual brilliance on game day.
Now, the weak link is this: the two options at 8 so far, are of the tank variety (Morgan/Vunipola -until Hughes becomes EQ) which is fine, but you are already playing catch-up with NZ, Wales, Ireland in terms of speed/line-out, now coupled with an ever present Robshaw, this means that the no.6 essentially has to undertaken both the role of: great line-out option, good ball carrier and jackal threat, which is a pretty tall order (understatement of the year), and so I conclude that at present; Wood, Haskell, Ewers, Clarke and Croft, will all appear to be deficient in at least one aspect of play when pulling on the England shirt- which imo is not their 'fault', but that of the other two players employed in the 7 and 8 shirt.