I have not seen this yet, a front dome light.
All the other suggestions are great.
But often in the morning (3:30 am for me) when I leave for work I wish I had a front dome light instead of reaching way back to flip the other one on.
It would be good for looking at a map too, or if you needed to get to your CDs or bring up a playlist on the iPod.
There also is plenty of room on the headliner up front to have some sort of a mount to attach a CB radio to.
Maybe even have it plumbed for 12v.
I was seriously thinking of paying Cartoys to mount my huge CB up there, but opted for the glovebox instead like I did on the 4Runner.
http://www.pnw4runners.com/fj/cb/DSC00023.JPG
But there is plenty of room on top of the headliner, even for a huge Cobra 29.