So there was the very concrete problem that F-Droid could not continue to function with the verification requirements, because they rebuild every app and so would have to know every key.
That would at least be an improvement to the current situation, were they wouldn't be able to operate at all.
If the flow is designed such the you only have to do it once for F-Droid and then the unsigned apps would be installable from there without friction, it wouldn't even be that bad.
Do the changes here do anything for F-Droid?