We ran into a use case yesterday where we were simply re-pointing our target URL in an API monitor so that a test could be conducted in a lower environment with a different URL.The ability to copy a monitor would have negated the need to re-create the monitor from scratch using the same arguments that existed for our production monitor. Instead, we could have simply copied the monitor, and changed the target URL.
Here you can review submitted feature requests and vote up the ones you like! If you can't find the feature you want - go ahead and suggest your own idea. Ideas with the highest rating can be implemented in the product.