I may be too close to the research, but it appears to me to be so hard as to be unrealistic.
I recall some story a while back where an auditor wanted to see all TCP packets printed out on paper, and it had to be explained to them that this would require a continuous supply of trucks.
Tokens are regularly priced in cents or single digit dollars per million tokens. It's not quite a word per token, but yeah, nobody's reading all that.
Worse, we don't always know the intent even when looking. We have a few tools to attempt it, for example the (misleadingly named) "chain of thought", but that's more like a notepad and the better models get the more they can, for lack of better words, read (and write) between the lines. We have probes and J-space* is the most recent one I'm aware of, but we are still scratching the surface with how reliable and general these are.
But you said "need"; the need for something can be present without that thing being possible.