Making new Healers and DPS jobs won't matter if players don't play them. The changes to both tanks and healers are being knee-jerked in most cases (Yes, some vocal players are expressing dissatisfaction here, this is a forum, you expect people to be vocal more on the negative).

I expect more healer and tank adjustments through the expansion, along with some DPS nerfs to tone the outliers down a little. However I don't hear many people stopping their Tanks completely, so much as putting them on the back burner to level jobs.

But hey, if you just want to play a DPS, PvP Queue hasn't been shorter these days. As far as progress through things going as a DPS - Find a healer friend?