NIP-96 or Blossom?

At first glance I don't like either.  Blossom should offer NIP-94 file metadata as HTTP header fields for GET downloads, not just BUD-08 /upload /mirror.  Blossom allows delete, but what if two different users upload the same data?  NIP-96 OTOH has a complex nip96.json file with weird decisions (e.g. waht if api_url specifies a different hostname?  Why have delegated_to_url given that state of affairs? Who is going to understand these complex plan objects?)