If you were really sneaky, could you add some small jitter to the network responses to make it more difficult to locate?
You can only _add_ jitter. So presumably you make people think you're farther away than you really are. I guess if you're especially clever, you can manufacture responses to packets you haven't sent yet to throw people off.
Or just block inbound ICMP.
No. You would need to add hundreds of milliseconds depending on the sender's location.