I'll be changing the first, last, and (most likely) dropping the middle entirely... but not for the reasons most people would think.
Dropping the middle because I consider middle names to be redundant. I see no point in having a name that I'll never use, and nobody will ever hear or see unless it's some sort of official paperwork.
And the last name? Well, none of my family share a last name, not with each other or with me

. I see no reason to hang on to it when I'd prefer something else.
The first and last name I'll be changing to were something I picked about 10 years ago, and have no relation whatsoever to my birth name (either of them). I've always loved the name and always wanted it for myself.
So yeah, it's changing - but not over family ties, and not over stealth.