I very much agree astronauts wish to and must be able to see what goes on outside.
Shepard had a periscope and wasn't it giving a black and white image of Earth? (He said "What a beautiful view" but that was for the public, not for him:-)

But when you look outside a commercial jet window, which is sometimes streaked with condensation or with cracks or not perfectly flat (and this was also the case with the Apollo Command Module 5 windows), passengers (and astronauts) are missing a lot of what goes on!
Every spacewalking astronaut , the first time he/she goes out, is gasping with awe at his/her first sight!
Meaning : even windows don't give astronauts the full picture.

With help of improved camera technology (getting smaller, providing with sharper images, eventually restoring 3D vision) and also making the Sun visible through special filters or stars visible through artificially eclipsing the Sun's light or reflected sunlight, the astronaut's viewing experience would greatly be improved!
Our natural eyes can only let us enjoy seeing our own planet and the Moon and once we're close to it, Mars. But nothing else, especially if we're on an interplanetary path.

Raoul