As I understand it they only do this on some of their amplified versions and not on the top of the range unamplified classicals and flamencos.
They say that the individual saddles produce "the most faithful sound". But the LR Baggs System looks as if it uses a single piezo under saddle pickup. I don't understand how the combination is going to be actually better. I may be wrong, just not sure on this. On a normal guitar all the strings transmit through one transducer to the soundboard, the saddle and bridge.
Individual saddles have been tried before to overcome problems of intonation. There seems to be broad list of reasons why they haven't become widely accepted.
One setting might only suit one brand of strings.
Its time consuming and costly to do.
The normal system works fairly well anyway and most players seem to manage.
Some compensation can be made by altering the position of the "crown" on a thicker saddle.
A properly compensated guitar needs work on the saddle and the nut.
Some makers will compensate the saddle and some will alter both the saddle and the nut, those who have tried the guitars think highly of the result.
"When I was younger, I could remember almost everything, whether it happened or not." Mark Twain