I just find it funny because most people want an organiser, but they probably don't know why. I mean, some who say we need an organiser are the same who fap over Vidic and want a man marking system (I'm basing my comment on the big mass at VS).
I'd love to have an organiser in defence too, don't get me wrong, but I'm sure that two very good defenders like BA and Chiellini won't play bad simply because none of them is an organiser. And our defense will surely rock on with that pair. But why we'd eventually need an organiser in defense imo...
Offensively (ball playing defenders), we have no reasons to get one, as we have Pirlo playing very close to our CBs. Defensively, we'd need one to lead the line as a sweeper-ish guy if we played with the offside trap (high dline) and perhaps a zonal marking system as well. So, it's down to Conte to build well or not our defense, because he has serious quality in his hands. Too much agressivity and the lack of a sweeper-ish guy can be a problem to solve, it's true, but I think their individual quality will compliment eventual mistakes from the other partner. Plus, they aren't exactly dumb CBs, so I guess they can reach a way to understand each other on the pitch and don't get caught easily and childishly.