I know this thread is more on the negative side, but to put a different perspective on here, I think this will be a good window. Not saying it is the best, or that they have nailed it so far, but they have brought in some quality players. Delap, Gittens, Estevao, and Joao Pedro undoubtedly improve the attack. Essugo and Santos improve midfield depth.
This team is better than last year's. I know we all want them to go out and bring in world-class players at winger, GK, and CB, but it just isn't the way the team works anymore. Also, as dreadful as the defending seemed last season, Chelsea still allowed among the fewest goals in the prem, but many times struggled to score. The attack is better, so they did fix a glaring issue in the team.
I would love to see a top CB brought in still, and there is still a desperate need for a LB, and I hope it is Hato. I think that would be a great transfer.
But overall, I think this window deserves more credit than it is being given on here, and they are a couple of players away from having a great transfer window.