I like 'normal' names, or names that are a little more unusual but unlikely to get children teased.
My daughter had the short form of her name on her birth certificate, as I could see no reason for giving her the full version as I would never call her it!! When she changed her name by deed-poll when her step-dad and I married (she wanted his surname as he's been her dad since she was 3), she extended her first name to the full version!! She's always been unique!!!!