Hi there!
As for where THIS idea went (Augmenting 100% of the text with recorded audio - #14 by CaptainEdgecase):
Tons of local code and various learnings of lessons, mostly focusing on leveraging Vorple.
I think audio-IF has a lot of potential, just the level of effort to do it well (as hinted at in the discussion above, from various perspectives) is exponentially higher than pure text.
But best case, some of us will make it happen, at least for some small, rich games.