actually, now that I think about it, it may be even *better* than that. Since utreexo nodes can reconstruct the proofs from blocks themselves, they probably *don't* need the proofs to be submitted alongside the blocks. Just give them the blocks themselves and they can create the proofs on their own
Discussion
ah, wait...I don't think it *can* produce the proofs without access to the full utxo set...hmm...