There hasn't been continuity from the last manager to this one.
Gerrard's system doesn't utilise wingers, we spent £30,000,000 on Bailey last summer. That on top of the money spent on Traore the summer before.
Were your point to be correct, the manager we hired after Deano would play something similar to the 4-2-3-1 system which in some fashion fits last summers signings. As others have said though, our recent transfer success has been mixed, at best. Alex Berwick on Twitter articulates this really well.