The problem is, this is an issue that should have been addressed when ad_proc was initially developed. Since ad_proc doesn't choke on unnamed params, they are supported. Maybe the error message which is returned when a newbie uses a proc incorrectly should provide enough information to change the call? This could be added so that it works with existing code.
Changing the core affects all code outside the toolkit, no amount of volunteer work on the core can make up for the frustration of everyone having to make the changes to their own (currently working) code.
