[...]
So, unless there's some routing revolution, you're just going to have
to learn to deal with multiple addresses, and unless LL addresses go
away, you're also going to have to deal with scoped addresses.
LL use can and should be reserved for bootstrapping and diagnostics.
LL is used in applications already. e.g LL addresses are commonly used
to address BGP endpoints on exchanges. so unless you suggest to remove
LL addresses (and MPLS VPNs) implementations will need to handle
ambiguous and topologically scoped addresses, even without
site-locals.
/ot