I'd say all 5 have elements of their hand they need to improve if we're to make the leap from 10th to top 6.
Stearman and Basham would be the obvious ones to look for upgrades. Stearman is a solid 6/10 player but we simply need someone better in that role. Basham proved me wrong last season, but defensively he just looks short at that level. Having said that JoC needs to work in his concentration, especially later in games; and both Wing Backs need to be more consistent and know when to tuck in and defend.
Like I say, they all had good seasons, but if our ambition is to break the top 6 and higher, we need to be ruthless. Part of being ruthless is keeping clean sheets, and we were awful at that last season. Barnsley away summed up this in a nutshell..