It's a pretty word and a beautiful concept, but it sounds a bit like either a hippie name or some wacky religious cult name. Besides, I can't get over the fact that this was the name of that Nazi Unity Mitford.
In Mary Pickford's 1918 film "Stella Maris", she played a dual role; the title character, a typical "pretty Pickford" role, and Unity Blake, a bitter, disfigured housemaid. Her performance is stunning - if you didn't know it beforehand, you'd never believe both characters are played by the same woman. Had the Oscars existed then, she would surely have won.