The correct inflections, pauses, annunciations, etc. are all important to humans, especially so for audio books and similar things that need to immerse.
Otherwise you have to strain to listen, similar to listening to someone with a heavy accent.
Perhaps real human readers can help?
> The correct inflections, pauses
Because a model that can imitate a voice is still not capable of that. There's no need to have model that can do that. A robotic accent is best. Or perhaps you like to see your politicians make all kind of bizarre statements on youtube.
Certainly, and they do, but computers can annotate much faster, without attrition, and cost much less.
Generally you'll have human recordings for what you can, and TTS for anything missing.
There are a lot of books, live streams, podcasts, articles, etc. in the world.
> There's no need to have model that can do that.
I wouldn't say there's no need, or otherwise we wouldn't talk that way. It's a human element and the generated speech is for human ears.
> A robotic accent is best.
Best is subjective because that's a human preference. That being said, I'd say your preference is a far outlier.
Most people's "best" would be what they are used to hearing; the speech of native speakers.