Rome Avanti's forgotten alleyway

This little narrow alleyway in Rome Avanti was omitted from the course's routing in 8DX for some reason, despite the fact that it's used in two of the three Rome routes in Tour. You might assume that it was left out of 8DX due to being too narrow to comfortably access on 200cc, but this video demonstrates that it's not at all difficult to drift into the alleyway, even on 200cc and with a build that has awful handling. I can't imagine why it was left out then.
It's especially strange considering that the end result of omitting this part of the course was a very weird, makeshift turn near the beginning of lap 2 that takes you through one of the intersections that originally connected with the alleyway, but in a way that that it was obviously not designed to accommodate. A very baffling design choice all around.

[@Ridter]

My best guess as to why we enter Piazza Navona on Lap 1 instead of that alleyway is to prevent too much overlap between racers who are further ahead on Lap 2 and racers who are far back, which would be rather awkward. However there's overlap in the Piazza Navona section anyway so I'm not sure

[@angus80w]

I remember first playing it and I was super confused and sad

[@vroom0925]

I was wondering about that alleyway as well; really odd they didn’t implement it into 8DX

[@goatprince1]

The BCP team usually made a point to include every single road in the city course routes, sometimes even implementing roads that weren't even used in Tour. It does seem very odd that this one alleyway was left out of Rome when the most blatantly obvious route arrangements for the track entailed its usage.
It's possible that the alleyway somehow didn't prove conducive to good gameplay, similarly to how Amsterdam 2R was a better choice for MK8DX than 2N, which led to the split path in the canal being eliminated. I'm not sure how exactly that logic would actually apply to the Rome alleyway, but that may be the case regardless.