Ill make it short as ALOT is going to be changed after I read the book... However, due to what we know now, I needed to address this now. There will likely be more!
Yep, every Titan other then and the , is dead.
If you were playing a character who receives Titanic visions, this hurts you the most. You will need to find a different being who talks to you, find a Keeper whos alive(So not Tyr), or a powerful Titan-forged being. (Think powerful Titanic constructs we've fought, like Keepers, but are not referred to as such.)
Do remember, Avatars, Sisters of Steel, and other Titan-based classes ARE STILL TOTALLY OK!!!
There is a new titan keeper, "", and hes like the extreme warrior Keeper. So ya, considering that warriors need weapons and armor, and none of the other Keepers are well known as smiths (Other then Mimiron, but come on, none of us are going to worship him.) Odyn is also an OK replacement for you Champions of Khaz'Goroth.
DO REMEMBER, THIS WILL , OR !!! SO PLEASE, CONTINUE RPING AS IF THE TITANS ARE STILL ALIVE! THE ONLY BEINGS WHO WOULD KNOW WOULD BE DEMONS, THE KEEPERS DONT KNOW EITHER. Are you going to trust a DEMON!?
If you do plan to RP as knowing the Titans are dead, keep in mind that Azeroth itself is a Titan. So you can remain faithful by worshipping Keepers or the planet itself!