I enjoyed the community that the original WOW fostered. But there were plenty of times when their wasn't enough community at all. LF2M Tank/Heals being spammed into chat was hardly a rare occurrence.
It's probably because of this that someone wanted to develop a LFG add-on for the game that replicates he one we see on retail. Blizzard, rather quickly, squashed this by eliminating parts of the API that it used. While I don't feel the smug superiority of heralding Blizzard's decision to mandate the purity of the experience, I do ultimately agree with it.
As Mage, my services were never particularly in high demand. In response I kept a notepad file where I listed every player I had grouped with categorized by tank, healer, and DPS. Every component run earned a player a "point; exceptional play earned two. Players who constantly afk'd or played particularly poorly lost a point. Anyone who went below zero got frozen on my list for a month.
It ended up being a good system. It acted as a quick way to find and message tanks and healers, and helped find exceptional DPS that could make up for other weaker players. When I eventually became an officer in a raiding guild in Burning Crusade, the list was a very quick way of finding recruits that I know were sound.
After my nightmare with raiding just two days ago in the modern day retail version, I'm hopeful that such a rudimentary list can bring back an experience more akin to what I had. Maybe it will take time for slobby players to wash out of the game. Maybe it will become overrun with elitists and become unbearable. But WOW Classic is a fresh shot and creating the kind of dynamic that can foster communities. Doesn't mean it will happen, just means we can try a hard reset on the social dynamics of a game that's been pretty dysfunctional for a while.