Funny how that is. Adding extra mass around the bridge would normally be considered a "no-no." Brass bridge pins didn't help my D-28. Blech!
And yet doing this on a laminate top seems to help it. I had an old Yamaha FG351SB all laminate. Brass bridge pins definitely changed its tone for the better.
If you have a higher quality solid top guitar, a brass saddle won't buy you anything in tone or intonation that a good quality bone or even Tusq saddle will.
If you have a laminate top guitar, all bets are off. Try it and see.