I don’t really know the answer to this, but if you are already doing versioning with “butler”, the version number already shows up below the filename when browsing on the web (and I assume the same happens from the app).
Viewing post in Zip file name
That’s fair, I’d image most users when downloading a game for the first time don’t really focus on the version number, but I can see why it would be confusing when downloading multiple versions.
I think the way “butler” was designed is to optimize use of the Itch app, which would explain a lot of the design decisions.