Fold in the first of the old sites
Bring the first of the retired domains onto scofti, written fresh.
Everything is written new. Nothing is copied across from the old sites — they are format and quality references only, and the old URLs carry history that should not follow the work here.
Which site goes first is undecided.
Closed
What was worth bringing over has been brought over, and none of it is content. The research pipeline came across as working code (SC-8), and the accuracy rules came across as doctrine (SC-11) — the standard the old work was held to, minus the search-traffic argument it used to be justified by.
That is the whole of what the earlier properties were for. Everything published here has been written fresh, and no old URL, name or page has followed the work across.
Folding in a specific site is not needed now, and there is no first site to pick. If one is ever genuinely rebuilt here it starts as new work under its own key, written from scratch like everything else.