I personally feel there should be a lfg system. You don't have to use the system you could still spam "LFG". Of course on some lower population servers you would do this in chat for hours... looking for a tank or healer. Spamming LFG on higher pop servers only works if you have other people around your level. After everyone gets to 50 yes you can do 50 instances but what happens to lower level instances? What if I wanted to do an instance on an alt but there was nobody my level to do it with? For WoW players anyone who played the before WoW had their LFG system cross server knew that it was nearly impossible to get groups for lower level instances. I personally ended up having a friend who was max level run me through them. Let me state it again in case my point was missed. You dont have to use the LFG tool, but I feel that for those who want a LFG tool there should be one.