While I'm thinking about it....
if you use /msg nick,nick,nick or #room,#room,#room,etc, instead of it just showing up where you typed it, have it show as though you typed it in the respective rooms.
ie...
/msg #MyRoom,#YourRoom,#OtherRoom Hi there!
instead of it showing up as though you typed it from one location to all those rooms, have it show it in each room as though you only typed it in there.

and come on, I've seen a reference to others referencing the /echo with the features.. Some support might encourage the feature to be added!