Definitely. Without DP the creating burden falls completely on Diego. It's not hard to man mark or double him out of a game. We absolutely need Camo on if there is no DP.
You prefer Caceres to Zebina? Or you think Zebina won't be fit for long enough to be worth considering?
I think that in midfield, Sissoko, Diego and Melo are guaranteed starters and the fourth spot in midfield should only be decided depending on form and who the opposition is.