I'd love a service that surfaced "architecturally desirable" homes for sale in your area, at various price points.

This is a hard criteria to define. But I know it when I see it. Some combination of materials, craftsmanship, age, and design. Not necessarily location or price.

It's very hard to filter for using Redfin or Zillow. I wish there was an MLS site that showed you 50+ listing thumbnails on a single page and allowed you to click through on any that caught your eye.