Status update on Leanspeech

Hey, it's me again. I'm making a different issue for a different question : "What's up with leanspeech?". To clarify: i've seen your leanspeech implementation (both the standalone repo and in optispeech), and I wondered if you'd tested it, and how well it performed. Also, how much "leaner" is it compared to lightspeech. Finally, it seems that leanspeech isn't capable of doing rate/pitch/energy modulation. Is that correct?