Either they just need to come out with another tank and healer class, because in HW this problem was not to big of an issue.....or just give dps a little more exp to balance out the wait time between tanks and healers going twice while you're still waiting for one que

Honestly the only way around this is to never never never ever just realease two dps classes that was the worst idea for que times hands down and plus only like 1 healer is good and 1 tank is good while the rest have some balancing issues...