I've removed the dust seals from my brake pistons...?

Hi all, i'm a pretty experienced mechanic (although not qualified) I've heard of people removing the dust seals from brake pistons, especially on race bikes. I know it reduces friction at the expense of having to rebuild the brakes more often, but does it make them more prone to leaking? The reason i ask is my gsxr 750 has 6 pot calipers, and out of the 12 pistons 8 had seized due to damaged dust seals... i've now removed all dust seals... If anyone has any experience with this please let me know! Thanks in advance...