@Gazza
Re: Sess, I don't think it's an overreaction as much as a recognition that these fullbacks, Emerson and Sess, were identified as weaknesses last season. While they may have improved, we also specifically brought in Perisic as an upgrade on both Sess and Reguilon. And in today's game, a real pressure cooker against a good side, Sess was utterly invisible up against a makeshift right-back, while Perisic stepped in, was solid and provided an assist at the death.
We need players who show up against Chelsea, not just against Southampton.
Re: our shape and Richarlison, I don't mean he was bad, I mean he wandered all over - showed up on the left wing, right wing, down the middle. As for our shape, Conte mentioned that the second goal we conceded was because we weren't used to the four at the back - in fact, he declared we wouldn't have conceded it if we had three at the back. It's safe to say we have more work to do on that formation, I think.
Re: Romero, fully agreed. But there will be a time when he gets sent off regardless - he's not just mindlessly aggressive, he plays on the edge. But sometimes refs will see him on the wrong side of it - just the way it is.
Re: Davies and Dier, not against Southampton, but at the end of last season, for sure. And plenty of times last year - the fact is that in our best sides under Poch, they were both subs, only brought on when something was up with Toby/Jan/Wanyama/Dembele in Dier's case, and Rose in Davies' case.
We can't rely on them long-term if we want to challenge - we need a better distributor than Dier, and a better LCB than Davies.
Finally, re:Chelsea, I think their technical level is just better than us. The way they played quick, one-touch passes, touches around the corner, instinctive balls into spaces they knew their team-mates would be in...those are exactly what we need to get out of teams pressing us,and sadly, very few of our team have it. I don't even think Kane and Son can do those all that well. Kulusevski can, Bentancur can, Romero can - and it shows what we're trying to build towards that all those three are among our latest signings, as is Bissouma (another press-resistant player). But the rest lack technique compared to Chelsea, and it *always* shows in the ease with which they escape our press while imposing their own.