just something I tested...
Skyranger Windows mod
This mod adds tiny round viewing windows/slits to the sides of the Skyranger hull. While they allow your troops excellent scouting while still on-board, they also allow the aliens to see you, so you might get PSI attacked right away. It was inspired by XComUtil which has a similar option.
Important note: Don't worry, the windows do not allow any side to fire through them.
In the zip are some preview pics and the reference BMP file usable in PCKview. As you can see I merely added 4 tiny slits.
Civilian 2016. Feel free to use these files in any way you see fit.