I'm working on modding one tonight. Having to stop because some glue needs to dry.

About the LED on top. I tried mine after adding the plug from the original TARDIS, and I had no light either. But I did have a blue LED in a 44 style case handy. I took it apart and attached it to the wires. That worked for me. I just need to glue it into place.

I have no pictures, but the light on the USB hub has a plastic clip inside that's very easy to remove. Then, you can take the light off the TARDIS to remove the original LED and set it back in place. Because of the size of the LED I'm going to replace it with, I'll have to glue the LED in place.

Anyway, that's my two cents.