Here's a list of common services and information. CStar is our cserve 'bot'. DeathStar is our operbot. SL-IRC does not register nicks. SL-IRC does not have a memoserv service.
People abuse the service by reserving nicks they dont use, etc.
Plus it is an extensive administrative burden to manage, fix and keep current. There are no plans to implement nick registration. We may provide a memoserv function in the future. In a word, no. CStar is written in perl and has been specifically designed to be a chanserv.