[jtrueb]

I am of the opinion that a community-backed, portable library of encoders/decoders for a single L2CAP stream or notified characteristic would be far more useful than numerous "standardized" services. I often find the implementation lacking and have to implement something custom, which is nearly always easier over a single characteristic. Something in C++ or Rust would be ubiquitous enough that it could have one counterpart in firmware and another in Android/iOS/WASM. Many GATT characteristics do not handle compression or time-series data well, and there is no shim without going custom over your own characteristics. When I need something optimal, I am probably not using a standard BLE service.