This is not an option. That was a reference made by @Brucanna in his post of 8 days ago to an account you would create. There is, by the way, no reason to use Special Accounts for that. It can be an ordinary liability account.
This option never existed. The structure of how it worked was once different and somewhat more complex, but it has never been optional.
This is not new, but has been in the program for at least three years.
This isn’t going to happen, and couldn’t happen in a number of the reports because it would make no sense. What you have been writing about from the beginning will be handled when job costing comes on line. That is second on the Roadmap. Tracking codes were never meant for project accounting, but for handling different company divisions. They’ve only been a clumsy workaround, and no effort is going to be put into enhancing capabilities of a workaround when a purpose-designed module is being worked on.