This..

"9) The science officer of my ship addresses me as 'Callandra' - my first name. This is very informal - surely she should address me as my rank (Ensign?)"

Contradicts this.

"3) Being in the Star Trek universe!"

In many of the shows and movies the Captain grows into a first name relationship with certain members of his crew. Granted, it's only beta and you shouldn't be that close yet. :p