I never really understood why people dislike RDF so much, I find it very handy at max lvl especially, but it also breaks the drudgery of questing. And I like spamming HC 5 mans at 80, when I'm really bored.
People who want to talk and "socialize" will do it anyway, people who don't will just say "lvl 40 hunter, inv pls" or whatever, then stay silent throughout the dungeon.
IMO RDF should be enabled once ToC/ICC hits, if not for everyone then at least for max lvl players, but it should be a thing.
^