I think the specific mix you're after is going to be impossible to find. If you're prepared to sacrifice the gigabit requirement and go with 100 Mbps Fast Ethernet instead you might be alright, or else if you want gigabit then you probably won't get PS/2 ports.
Yes, Like a docking station. One usb connection from laptop to the replicator. The peripherals nic, monitor, ps/2 ports etc. all plug in elsewhere on the replicator.
I will keep looking and thanks for the posts.