"Progression" Raiding in this game currently makes up what % of their revenue stream? When you find the answer to that, you will then know the amount of effort Bioware will put in to addressing your complaint.
If it doesn't concern them, it should. I'd gues that the majority of people who have played wow "since vanilla" are people primarily concerned with either end game PvP or PvE content.
We may not be the bulk of the current player base, but we're the ones that keep our subs going consistently, rather than playing for a month or 2, then dropping for 3 months, then coming back.
The pertinent expression is "one in the hand vs 2 in the bush".