I think that, whereas SG is correct about squad rotation, he needs to forget about favourites or others who, because they didn't play the previous game, must be included 'today' ! The previously quoted scenario of Flanagan vis a vis Halliday is case in point but, potentially, that policy could cost us games !
In other words, squad rotation is good BUT not just for the sake of it.
SG is still learning and probably still trying to keep the entire squad on side but maybe not recognising that perhaps the squad are happy to be part of a winning squad to be utilised as and when.