Death to the Bishops

I doubt supporting role at bosses is going to save Bishop class.

Most people are gonna quit Bishop.
Why?

1. DK are really important at bosses because of HB and they also can deal decent dmg. Is there alot of DK? No.
2. 3rd job skills wont get bishop anywhere, Nexon can't boost damage of shining ray because it would lead into Priest being overpowered 3rd job class.
3. 4th job skills... BB is useless skill because of a cooldown, dmg and other stuff. Angel Ray hits one monster.

Okay now we ASSUME that Bishops can't solo effectively and boss runs are not gonna save the class. How about supporters role in a training party?
This is really bad assumption based very few premises 0.o Also, Big Bang doesn't have a cooldown, it has a charge up. You can cast Big Bang without having to wait for any period of time.

1. EXP... It's horrible and even worse with this new 80:20 party formula. Soloing even as bad as it is, is still better than party.
2. HS mules leech no EXP and you have full control over them.

Now question is... Who wants to play a class that unlike DK has no future outside bosses?

Once again, horrible assumption. While it seems that way, you've yet to see if any bishops actually are able to train decently. While it does indeed seem bad for them, you make it sounds as if there's some sort of absolute proof that this is the case.