Just generally this 'next man up' mentality is really refreshing. Under Powell especially he would often talk about players missing etc and as a club - and a fanbase - for a looong time we've focussed on what players are missing for us having a massive impact on the game. Whether that was no creativity without Briers or no go forward without Vaughan.
The structure you attack with is really important, rather than relying on one specific person to create something from nothing - credit to Glees i guess?
Burgess just shrugging off players missing with the media must give the squad players much more confidence in themselves that they can go out and do a job. It helps of course having the younger squad players being able to do a job, but again they are being given experience and confidence by not shifting senior players about so we have the most experienced 17 out there, rather than playing a younger player in a specialist position.