I found this line of particular interest when looking at the condensed mongo interview:
'The team usually gets negative feedback if they have trinkets and gear from previous raids that are still good enough to farm when progressing a new raid.'
reason being is that in WOTLK content many of the 'old' trinkets from previous tiers (in some cases the opening tier) are still BiS for some specs in the game even at ICC level, for healers one of their BiS trinkets is from TOGC25 faction champions, for arcane mages their BiS trinkets are the ilvl 200 spellpower trinket from naxx 10 (or the TOTC 5 man drop which is functionally the same trinket), as well as the TOGC25 anub'arak trinket, or how about the ulduar hardmode trinkets from algalon etc, are people who play this 'classic' edition of it gonna be complaining about this?, gonna be fun to see how confused people get when their BiS items don't all come from whatever the 'current' content is for that tier.