Do you think they will ever

Arch Mages should just go merchant or boss more instead of spamming ultimates all day.

Hi, I don't know what it's like in your server, but I/Ls and F/Ps are pretty much shunned from all boss runs save Papulatus here in Broa.

As for the topic at hand, I think that the staffs/wands should have the intended -25% on Holy.
You Bishops have a skill that does just about as much damage for half the cost, us, an offensive class, wanting to do more damage to keep up with you is not the end of the world.
(Yes. I am calling you a support class.)