For the amount he got of the ball and the role he was playing, Di Maria was extremely poor in my eyes. In any formation featuring a #10 and two strikers, the #10 should be feeding balls through, finding pockets of space and basically running the show. We know that our strikers have the movement and make the runs, but nobody supplies them.
I am trying to recall the two "great chances" you refer to (to be honest, the quicker I can forget that match the better), but what I saw was several heavy touches and miscontrols that gave away possession from attacking areas. I really think Di Maria needs to play a deeper role for us - the weird thing for me is I think Di Maria would be perfectly suited to the wide-CM role in the diamond, he fits it down to a tee. Instead we had Fellaini of all people having to operate as some sort of wide target man, and Di Maria as #10 - the fact that we couldnt score against a league two side in 90 minutes says enough about how well that worked.