Late Roman Unit Sizes

[Flavivs Aetivs]

Considering this is like the 10th time this topic has been brought up in the past 2 years in a variety of different threads, I stickied it so that way people don't have to start new ones each time.

I also had a thought:

In the Vita Germani Constantius of Lyon gives a brief description of the British forces (their description somewhat matches that of the old Limitanei and Vigilies) and then says that Germanus "based the army on a new model."

Could the Notitia Dignitatum, a 1500 man Legion, the standardization of the size of the Arithmos, and the mention by Constantius all be references to a reform of the Roman Army taking place between 395 and 419? After all, it is only in those years do new units like the Cuneus begin to appear.