I think the lineout was just having an off-day against France to be honest. Hartley is a very good thrower as others have said but Tom Youngs isn't. We need to stick with Dylan I feel, I wouldn't attribute any blame his way either on the scrum. France have a good scrum and I felt Marler (mainly) and Cole were the guys having a hard time of it. Still it wasn't a disaster. I would love to see Lawes and Launchbury given a shot at lock, at least in the Italy game.
We need a natural number eight too. We should have been playing Vunipola or Easter imo after Morgan was injured. The Lawes at flanker experiment didn't work out. Backs are my main issue though. Youngs I think has had an excellent 6N, especially in Ireland. Farrell played his best game for England against Scotland but since then has been average. I would love to see Burns given a start, although I also think Flood is preferable to Farrell. At IC, I can appreciate Barritt is a rock in defence, but I value attacking ability much higher than that. I suspect if Fofana was English he would struggle to earn a place under SL. 36 and Tuilagi would result in many more tries being scored and a generally more expansive running game, but these guys are also very capable in defence too. The back three are our biggest weakness now I think, Brown is better at so much more things vital to a fullback, he needs to play while Foden is recovering form. This 6N could have been great for him but he is stuck out on a wing not achieving very much. As for wingers, I would stick with Ashton, his lines are brilliant in attack and if we gave him more good ball he would be scoring a shitload of tries. As for the other wing, May, Sharples, Strettle would all be deserving of a shot. I left out Wade because despite his great running skills, his size would make him a target. Players of that ilk need to be exceptional to be capable at international level i.e Robinson or Williams.
Edit: Tuilagi would be a waste on the wing as Fofana was for France.