As a reminder, here is where you last brought up the idea, and the feedback:

https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2019-June/017014.html
https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2019-June/017031.html

Since then, here is some new material on signet:
https://diyhpl.us/wiki/transcripts/scalingbitcoin/tel-aviv-2019/edgedevplusplus/signet/