Could be that the parents want to distinguish their children as unique and special. What results is the poor kid having to explain/correct others on the spelling/pronunciation of his/her name their whole life. That can put an unneeded burden on the poor kid. Coming up with an exotic spelling won't transcend a person to suddenly be a genius or multi-talented. A person's character and/or achievements come with their own abilities. An unconventional spelling often ends with confusion.My first name has various common spellings, my surname needs spelling ... so my kids have incredibly boring names with boring spellings, and they've all simplified the surname. I get sick of spelling my full name, or people asking how to pronounce it.
My favourite that I've come across at work is Aaliviyah, pronounced Olivia - why????????
Sue likes girls names to end with an 'e'. Heidi ends with an 'i', but there are lots of other names she could have chosen where she didn't have to alter the spelling. Funny she didn't have naming rules for the boys, although towards the end everybody got the 'e' treatment (Alfie & Archie).