I think now that Sturridge is back, we can finally have some tactical variety. We can adjust to the strengths and weaknesses of the opponent for maximum effect. For weaker teams at home we can play Brendan's version of very fluid 4-4-2, so Suarez, Sturridge, Coutihno and Sterling can all be on the pitch at the same time. When we need more control and pressure in the middle, switch to an inverted midfield triangle (2 CMs, 1 DM). For a more defensive/counterattacking shape, a regular midfield triangle (1 CM, 2 DMs) could work. When Allen returns, we will have enough quality players to execute all of these formations successfully.
I really hope once Sakho returns we will no more reshuffling at the CB position. Watching Arsenal today again brings it home how important a good, settled CB pairing can be. When Mertesacker and Koscielny – each one on his own not a world class defender, but compensating each other's weaknesses very well – play together, they concede 0.5 goals per game. Imagine if we had that + SAS and co. scoring goals for fun. We would win the title easily.