I don't think saddles are as crucial a factor on electric guitars, because the sound it picked up directly from the strings..
but I have long been pondering their role in acoustic guitars.
Almost all the music coming out of our soundholes has to travel to the soundboard, through the bridge/saddle combo.
When I see the 'twist wheels' and other 'blockages' in this route..
I think; "That can't be getting the best possible acoustic sound?"
With that in mind, I have launched experiments with Lignum Vitae, the same material that I use for my guitar picks..
and that I am obsessed with.
We all know how sound travels so well through water..
well the cell structure of Lignum Vitae is saturated with a huge amount of it's own natural oil.
My theory is that a saddle or bridge of this material, with the grain running in the optimum direction, might impart a new level of sound quality.
I have already sent the first prototype to my tester.
http://surfpick.com/saddles
I don't see why they wouldn't be of value on an electric guitar, perhaps to a lesser extent?