Custom field auto-fill on HTML input element's "id" attribute

Currently it seems the auto-fill function only matches against an HTML <input name=“***”> element and attribute. Some complex (banking) sites I’ve noticed use javascript to programatically generate that “name” attribute which makes the auto-fill fail.

It would be very helpful to allow custom fields, when defining the name/value pair, to also select the element’s attribute. e.g. <input id=“***”>.