That's true... I like the names that we came up with togteher (Especially Kaede and Naomi, they seem too good to be true ^_^), cause they're actors who can pass for various ages. I also imagined Lord Otori to have a good-looking, yet tough and fatherly look, one that would make you think 'Ooooooooooooooo, he's friendly, isn't he?' So I feel he'd have to look mature and like he knows how to fight. Lady Naomi Maruyama, I've always imagined to look like she's in her thirties, but still be faily beautiful and young looking. I also imagined her to be tall and graceful. Like I said before, I like to think of her as a motherly looking woman.
As for Takeo, I think he should be a rather 'pretty' looking guy... Just like the way Kaede sees him when they first meet. Faily handsome and attarctive. I got goosebumps when reading Kaede's account of Takeo. He sounded lovely. And Kaede should be a very beautiful looking person, who is rather delicate (cause that's sort of how I pictured her in the book).