Ajax loading of options (autocomplete textfield widget) when setting arguments

It would be cool to have autocomplete enabled for the arguments field when creating a node with a ViewField. Similar to how if you add a taxonomy to a node you can set the widget type to "Autocomplete text field" then you'll get the standard drupal throbber/wait wheel while some options load.

Taking it a step further, ideally this should somehow be linked to what arguments are accepted for the View selected in the dropdown. So, if the argument parameters are nid, then nids with node titles would appear as you type in the arguments autocomplete textfield. If it's a taxonomy in the View argument, then terms from that vocabulary will be suggested as you type.

Thanks for reading,
-Tim