Would you be ok with no new tank or healer in 5.0?

One of biggest rumors going around is that there will not be a new tank or healer in 5.0 due to giving the dev team more time to balance the existing tank and healer jobs.

I know they will never go back to HW format with 1 tank, 1 healer, 1 dps, but I really wish they would go with that in 5.0