My suggestion is that a guild invite thru a command like /guild invite (name) would be nice to have as in places like WvW and such, you need to be very close to the one you want to inv and right click his or her portait and click guild invite, atleast for me and some people, but seen some use thru contact but that shud not be needed as u dont alwasys want to add every1 to friend list.
thanks every1