> Makes bringing up a new node dependent on other nodes having consistent
> uptimes, particularly if you are on a low-bandwidth connection.
>

This is already the case and always has been.


> NAK
>
> No blacklists


If you're volunteering to store and serve the chain no matter what it
contains, indefinitely, then you're free to have a no blacklists policy and
serve up data transactions for no cost. Otherwise, other people will do
whatever they want.