It would be cool if the CLI was able to establish "Sessions" and then run commands on that session. I'm not exactly sure how to do this in windows / *nix but something like:
membase session -c 127.0.0.1 -u Administrator -p password
membase bucket-create --bucket=mybucket2 --bucket-type=memcached
without having to add the cluster and username and password to each line, clutters up the scripting.