Could someone explain to me in 5 year old terms why they came up with the progression servers? Someone said just for new servers for hardcore guys and gals to start over and rock the new terrain? I just don't understand what makes them different and why would someone leave their toons and guilds to go to the progression?
You'll get different answers depending on the skepticism of the person you ask. People have been clamoring for years for a "classic" server, and they released this to capitalize on those who had cancelled their accounts but said they'd come back if it were just "old school" again.
Most likely, it wasn't completely motivated by greed, and they wanted to provide an environment that would appeal to existing players and past players both. Most current players didn't get to experience original EQ and this gives them a chance.
What makes them different is that no expansions are currently open, so it's just Vanilla EQ (+ the planes, + Paineel, + the Hole, + the Warrens, + jaggedpine). Kunark is scheduled to switch on tomorrow, and from there the progression [i]should[/i] follow a natural progression mainly thanks to keysinks.
Some guilds moved there for the heightened competition. It's a direct test of skill/time devotion with everyone starting on completely equal footing within the same set of rules. Never underestimate the pull of a good competitive environment. But as with the individual reasoning, some guilds may have moved there because they skipped these areas the first time around and wanted a chance to meaningfully raid Fear, and ToV, etc.