They're already ruined the experience of levelling, with XP buffs, heirlooms, the easy Cata quests, nerfing all elites, adding LFG instead of finding people yourself, etc etc.
Don't ruin it further.
Adding in LFG was definitely a GOOD thing for the lower levels. It was virtually impossible to find groups for most of the lowbie dungeons until dungeon finder. Even though I had played WoW for years before dungeon finder, it wasn't until dungeon finder that I was able to actually do instances like Uldaman and RFK
http://i.imgur.com/16y3u.jpg CE's Official Pornstar