The game sorely needs more companions and class/role redundancy with companions.
There is still hope ...
Maybe (and i know its quite wild speculation, but still ... maybe) in the final release we will get option to hire certain characters as Mercenaries ...
Characters like Aradin, Sazza, Crusher, Abidrak, Minthara, Ragzlin, Gut, etc.
Dont get me wrong here, i would be thrilled to have any of them as a regular companion ... BUT if that would not be the case, Mercenary (fullfilling the role you need, but have not much to say, and dont provide any personal side quests) would be acceptable.

Also, we really still dont have at least 4 more locations (or one wich will sustain them all) and that is Mountain Pass, Githyanki Creche, Shadowcursed Lands ... and Moonrise Tower.
Even tho to be completely honest, i would personaly preffer if Moonrise Tower would be completely separated from all other zones, and we would have chance to have all our companions (and items) gathered. by the time we get there.
But the point is ... nobody knows who, or what is waiting for us there.
