I’m sorry, but that’s like saying that a track road is already there for motorways. One does climb on it, right. Via ferrata is a specific and a totally different type of climbing than, well, climbing (Klettersteig vs Klettern) or scrambling.
vs
They should definitely not be confused, in particular because they require (mandate!) different equipment to be used and this can be a matter of life and death
This would be an interesting addition. But it still leaves plenty of undefined “paths”, as listed in