Having won his first two Test caps in England's warm-up matches against France and Ireland, Burgess was a surprise inclusion in Lancaster's final squad of 31 and came off the bench against Fiji on the opening night of Rugby World Cup 2015.
In the absence of injured Jonathan Joseph, he was subsequently selected to start at inside centre against Wales. England led 25-18 when he was replaced by George Ford and Warren Gatland's team famously battled back to prevail 28-25.
The following week, Joseph returned and Burgess was back among the replacements as Australia ransacked Twickenham. The Wallabies recorded a 33-13 victory that knocked out England. Burgess, who appeared briefly in the second half, returned to rugby league with the Rabbitohs a month later.
His comments come in the wake of Ireland unveiling Andy Farrell, another casualty of England's Rugby World Cup 2015 failure and now Ireland defence coach, as the successor to head coach Joe Schmidt following Rugby World Cup 2019.
Ireland captain Rory Best endorsed the decision with effusive praise.
"The thing that Faz does better than any other coach is that he makes it feel personal for him," Best said. "It is impossible not to like him.
"When he talks about defence, he makes you want to go and defend. As head coach, when he talks about any aspect of the game he would make you want to buy into it."