I actually voted for 'No' thinking the question of the thread title was the same as the poll. That'll teach me :P
Otherwise while I expect there will be changes to TBC, thats a given at this point seeing how Classic Vanilla went, the only intended tool for finding groups was the Looking For Group Channel. In WotLK they added the class role thing and then towards the end the LFD system, also LFR wasnt added until Cata.
My whole opinion of LFR/D is very mixed, the concept of finding a group with it is great, that core concept I love. But what I wish they would take out is the whole teleport thing after you find a group, just make people make their own way there. I think its a fair compromise. Keep the tool just change it where people have to make their own way to the dungeon. If they added the LFG/R tool to TBC to allow finding of groups but took out the teleport that'd be fine with me