Darkfall was really fun at the birth of the NA server. Only the most intelligent players (those who knew how to use their resources to their full advantage), and the most skilled players were able to thrive in that era. Those were probably some of the most entertaining times I had in online gaming.
However, the game was a grindfest and everyone knew it. Those with the most grinded up characters were able to beat players ten times better than them because they could spam large AoE magic spells that took no skill to land. The real problem with that game was the grind.
To give you an idea, I permanently quit the game the day that I decided to grind up one of my magic schools (everyone had far out-grinded me at that point, as I had quit multiple times because of various gameplay flaws). It took me three hours to get "Lightning Magic" from 89-90 and "Lightning Ball" from 69-70. Keep in mind that there are eight magic schools in that game with about twenty spells each.