After toying around with the TTS model it seems incredibly nondeterministic. Running the same input with the same parameters can have widely different results, some really good, others downright bad. The tone, intonation and character all vary widely. While some of the outputs are great, this inconsistency makes it a really tough sell. Imagine if Siri responded to you with a different voice every time, as an example. Is this something you're looking to address somewhere down the line or do you consider that working as intended?