I think people are over complicating alot of the issues. For years we were well protected because we had a team that defended as a team. When we lose possession on the edge of the opponents box, we look vulnerable straight away because we're constantly trying to get in position, as we play so advanced. When we have the ball and we are on the ascendency, we have a completely different defensive unit to when we don't have the ball, which isn't out of the norm but in our case, it's asking too much. We lose possession and the fullbacks are 20+ yards advanced from the centre backs, the centre backs are wide of each other, with Gerrard either ahead of them or wandering into a too far advanced position. We play either a diamond or with high advanced wide forwards, which generally gives the fullbacks the length of the pitch to cover and protect. The right side isn't too bad because you have Henderson who naturally covers this side, but the left - whoever plays there is on a hiding to nothing.
Like I said previously, play a direct pass into our defensive zone early and we're screwed, we don't have the capacity to reshape and that's why you have people getting sucked to players, a line that lacks cohesion and players looking like they're lapsing in concentration. All of this if altered would obviously have a knock on effect on our forward play, because we're able to get so many bodies forward, but it's such and obvious, gaping flaw, it needs sorting. Teams are going to expose it more and more and more. It's Rodgers Achilles heal and until we address it in some way, then players are going to continue to look inept at controlling it.
The problem we have is that Rodgers wants us to adjust to life without Suarez and not look like we're struggling for goals, good luck to him sorting out both of those problems because one will inadvertently have an effect on the other.