Voice Chat

[Elfidan]

I use it for people I know if they're interested as it aids in coordinating small things that are both hard to keep an eye on and hard to type (also, it builds closeness imo to know others by their voice as well).

I wouldn't use an in-game one for things like solo queue (which has been brought up before) for several reasons, all of which boil down to the fact that text is unpleasant enough.

You pretty much hit my opinion on the head; Dumbledore too.