Google Maps has has gorgeous 3D imagery of cities (below: in green)
Google also collects imagery data by driving cars around and taking 360 images, which they call Street View. (below: in blue)
The problem with the 3D imagery is that the resolution isn't as good as it could be. Google's Street View imagery could be the secret sauce for improving the resolution.
Here's a comparison of the resolutions of the two techniques.
Combined Imagery
My suggestion for Google is create a composite of the two image sets to improve the quality of the 3D imagery. Using the position data of the Street View, they can project the perspective onto the 3D imagery.
It's evident there's been some preliminary efforts to unify the two sets. When transitioning from 3D to Street View, you can see the Street View imagery being wrapped onto the underlying geometry.
Feel free to send this to our friends at Google Maps to see if they'd be interested in pursuing this idea!
Feedback and comments are encouraged in the comment box below!
Related Scholarly Research
I’ve been able to dig up some scholarly papers exploring the idea of using image fusion techniques to improve image quality.
Check out these Google Search Results.
On Dec 13, 2019, Google published a blog post about how they do indeed use other photographic sources to improve the quality of their 3D imagery. I knew the sharp folks at Google would figure this one out. Kudos!