No, we can't cross class E4E. ;( We can't cross class Arcanist at all actually. Only CNJ and THM.
As for CDs, we have the 40 second Essential Dignity. Lightspeed isn't useful because it makes things instant cast, but with a potency hit and a GCD to contend with, so that's trash outside of quick on the run rebuffing of protect/ss. There's also CU and CO that I haven't gotten yet but they've gotten enough complaints that Yoshi has already mentioned buffing them. Disable is only really useful on bosses with abilities that have a cast time.
If we get lucky and get a Bole or an Arrow that can be helpful in mitigating damage or healing it up faster, but that's all RNG. Usually on big pulls I start with the HoT and Benefic spam, if it's tougher Benefic II or ED thrown in, and double HoT-ting if it's really that bad. After that you just hope the tank knows how to use his own cooldowns properly.
