action_node_assign_owner maxlength set to 7

for the canned action action_node_assign_owner() if there are more than 200 users in the system a very small text field is rendered instead of the select menu. Problem is, the text field has a size set to 6 (very small) and a maxlength of 7 characters which means that any usernames longer than 7 characters cannot be validated and therefore breaking the action.

Is it possible to use the specs found in node.module for specifying author which has a maxlength of 60, no size specified, and also uses the autocomplete widget?