5,000 people all using 1 global channel for everything from help with local quests to any of a dozen flashpoints...
Useless. The spam would scroll by at 15 lines a second.
Have you people even played this game? You won't be traveling anywhere with your group. These forums will be so much less frustrating when only people who've actually played the game can post.
What is it you think you'll be doing while looking for a FP group in SWTOR? And is your argument seriously that LFD systems are bad because they actually work and then you run too many dungeons?