That's what Mancini has done, and they were accused of being boring, but finished ahead of us and won a trophy. You need solidarity before you can play the pretty stuff, its common sense, but Wenger is too far up his own backside and thinks endless attacking play will always win out.
What use is attractive football if you can't even defend set pieces, bread and butter stuff or be organized well enough to defend as a team all over the pitch?