This is the best metaphor I can think of for Guild Wars. In a market full of overly candied soda, Guild Wars is a nice refreshing glass of orange juice, freshly squeezed. It's got a little pulp, but it's sweet, and its simplicity is classic. Be warned though, Guild Wars is missing a lot of the 'massive' that makes up MMORPG, and makes some new assumptions that old school players might not enjoy.