LEDs blind because the P/N junction that actually produces the light is so tiny. The plastic lens surrounding the LED tends to be focused narrowly.
Would be good to see a photo of what you're working with.
First idea that came to mind (which is probably a bad one) was to retrofit LED strip lighting along the ceiling of the hallway. Either 1 strip down the middle which might not be asthetically pleasing or bright enough, or run the perimeter which might look better and provide better light.
Second idea was those fan LEDs that can be aimed. They are harsh to look at, so you'd want to aim them as perpendicular as possible.
It was a huge improvement in my garage, but then again I have tall ceilings so I'm never looking directly at them.
Third idea is to just get 4ft tube style LED lights and string them the length of the hallway. Also not aesthetically pleasing, but maybe some are made to look artful instead of utilitarian.