As a player of Well of Souls for nearly 30 months, my review is slightly biased.

Well of Souls is a MMORPG. It has very simple and old graphics, which may not be eye candy to the Everquest players, but allow for easy modification, so you may use your own skins. There is a large community of people who simply play the game and make skins for it. At last check the largest skin collection was around 4,000.

WoS' simplicity also allows for customization at a far greater level: the world. There is an evolving scripting language that is fairly easy to pick up, but also powerful. With it, and a little artistic talent and a lot of free time, you can create your own world: essentially a mod, complete with classes, quests, and graphics.

No need to do that work though, there are plenty of worlds out there already.