Honest assessment of QuicProChat vs Reticulum/Meshtastic/Briar:
- MLS overhead (500-800 byte KeyPackages) impractical for SF12 LoRa
- KeyPackage distribution over mesh unsolved
- No lightweight mode for constrained links
MLS-Lite design proposes 41-byte overhead symmetric mode:
- ChaCha20-Poly1305 with HKDF key derivation
- Optional Ed25519 signatures
- Upgrade path to full MLS when faster transport available
- QR code / out-of-band key exchange
