While working on nway's Chronoblade series, I was fortunate enough to be part of a team that created thousands of individual armor pieces, which were a part of hundreds of complete armor sets. Because of the deep and rich story line that consisted of different worlds and realities, we really had no limits on what types of unique armor sets we could create.
However, each armor set had a unique theme - whether it be An mighty Asgard warrior, or a nimble wood witch, we tried to give our players incentive to try and grind through the levels and dungeons in hopes to obtain a complete armor set that not only boosted their stats, but something they could be proud of and show off to other players.