And here's the answer to my part of the "Let's Get Meta!" meta extravaganza:
Thanks to
@madhatter5 and
@MikeyG for this three-way collaboration! Hope you enjoyed solving these three quite different interpretations of the "Let's Get Meta!" theme. Congratulations to those solvers who solved the Meta Meta Meta as well! (If you haven't, there's still time...)
A couple of comments regarding my puzzle. The meta-identifying mechanic of the self-referential clues was a clear first step. I tried really hard to make the self-references use two different parts of speech; for example, 1 across: "Govern using the RULE of law" [verb and noun]; and 23 across: "The state of having people RESPECT you" [noun and verb]. But it wasn't always possible; for example, 37 across: "Detailed inspection, often conducted using an EXAM, for short" [noun and noun].
The first letter of these grid entries spelled REFERENTIAL. But where did the SELF- come from, other than the fact that the clues were self-referential? Well, each of these grid entries can take SELF- as a prefix. This worked very naturally with some of the grid entries, like SELF-RULE, SELF-RESPECT, SELF-ESTEEM, SELF-INVOLVED and SELF-AWARE. Others, less so, like SELF-EXAM and SELF-LIE. But these are still possible, even if they are perhaps rarer in everyday usage.
And then there was the problem of the spelling errors! If you corrected these, you obtained "META META META IS" which, on its own, is suggestive but meaningless. Hopefully, though, you went on to do the
other two puzzles with the same title and meta prompt that came out within 24 hours of each other and found more spelling errors. Then, if you checked the release times, and put the decoded phrases into time-order, you had the meta meta meta prompt!
As far as I know, no one stumbled across my extra-hidden phrase, but that's fine since it really was of no importance!