"Path of Service - The Path of Service is a Path in which Eldar give themselves over to the direct service of others, finding in such activity both spiritual fulfillment and the knowledge that the labour they do is necessary for their Craftworld to continue to thrive. Though most of a Craftworld's economy is fully automated, there are still some personal services that require physical labour, and it is to these tasks that those who tread the Path of Service seek to apply themselves. Eldar take up the Path of Service out of the same sense of duty that inspires others of their kind to take up the more militant Paths. They perform jobs the Humans may describe as menial, including such roles that provide basic services to the Craftworld community, i.e. cooks, clothesmakers, manual labourers, etc." http://warhammer40k.wikia.com/wiki/Eldar_Path (Near the bottom of the page.)
What happens if you stay on this one too long? Because it could take you to strange futures not unlike R. Daneel Olivaw of whom I take my moniker. Interesting.
Basically the Path system is an Eldar safely experiencing things. The Path of Service is them doing everything to serve other Eldar.
Maybe you start losing all sense of self and you become a living robot ever at the service of your fellow Eldar. Perhaps something akin to Sansha's slaves from EvE. The creativity and intelligence remain but the absence of ego means you are basically the perfect servant.
