For certain information to be passed to guild members or when rushing like 7 ppl in diablo pm'ing each seaparetly is quite difficult. Wouldn't group message be a good upgrade?

If you mean the possibility to pm 2 users or more in same time, this has been suggested and denied multiple times. Too easily abused.
If you want to write a message to a lot of users in your guild for exemple use guild topics or guild chat.
This will never happen sorry.

This post was edited by Nico on Jan 4 2015 10:14pm

oh
and wats the reason it is denied? :/