The best looking speakers

Love the looks of the KEF Blade

As a start, you might invite your wife to flip through a few audio magazines with you.  Hopefully you will start to home in on where what she likes and what you want overlap. 

Duke

I love the look of the timeless classic box designs (as long as they're no darker than maple/cherry to rosewood - no zebra sriped ugliness please).

Big Spendors, JBL L100s, Tannoys, etc all look good to my gaze.

The Harbeth SLH5s stand out for me. Their grille and particularly their geometry just looks damn near perfect to my eyes.

However as beautiful as these designs look, the perfect loudspeaker for me would ultimately be the invisible loudspeaker - and I'm sure my wife would probably agree.

Beauty is in the eye of the beholder. In my humble opinion, nothing comes close to the stunning beauty and awe of the original Nautilus Speakers by B&W. Forgot if it was in SF or LA show about 30yrs ago, I recall scrapping my jaw off the showroom.

...look at new, Gershman Acoustics speakers: modern pyramidal, architectural-looking (except for their studio monitor) from the Avant Garde up. HIGH WAF, easily blends into almost any environment...
THE BIGGER QUESTION MAY BE YOUR DECOR: The problem I think you have is the "breathing room" needed by most higher-end audiophile speakers. You may need to consider new or vintage speakers designed for corner placement, or placement close to a rear wall...