What signings are you disappointed with? If we are counting Pearson and Rothwell as signings, the only player I think won't live up to it is Mark Roberts. We're getting a good squad together in my opinion and despite the lack of players in and around the squad at the moment (of which I'm having sleepless nights about by the way), the squad is looking decent quality wise.
I think you can only look at the permanent signings so Mawson has bags of potential, Watkins didn't do much in England last time but who knows and Roverts again who knows.
Roberts as been the one shining light in the first two friendlies, it's not the quality of the signings it the lack of numbers that's worried me for two months now I'm not bothered at all what will be will be