Best thing I ever got for my A4000. Allowed for low cost ethernet and audio to be added, and a Voodoo 3, which is cheaper and easier to obtain than native Zorro RTG cards.
Moving to PCIe would be nice. Not for the speed but for the connection compatibility, as there are fewer and fewer PCI cards available out there. But I guess all good things must come to an end; It's a minor miracle that the late '80s/early '90s architecture can still function at all.