Saints real needs

I'm a long time reader and first time poster here. I think everyone on this board agrees we need some help at corner, but it seems we really need some bigger bodies on the lines to play physical teams. I'm talking about DT, Offensive guard and some at right tackle. It seems like we have enough players in skill positions, but have problems with physical teams (i.e., bears, titans). I say trade up to draft Dorsey and maybe get an inside lineman in the 2nd round of the draft.