Because each tool holds a fragment keyed by URL string. Assembling a picture of one page means opening six tabs and reconciling them, so it is only done for pages somebody is already arguing about.
A page record is one URL treated as a first-class thing, carrying everything known about it.
The record holds search data from Google and Bing, sessions and conversions, its cluster and target queries, technical issues, its owner, its edit history and any revenue it influenced.
The question "is this page worth work" is answered by opening it: what it earns, what it is missing, what is broken on it and who owns it.
It will not be a CMS. Growth records and analyses; the page itself is edited wherever it lives.
Clusters, briefs, technical issues, the opportunity backlog, and leads in Flow that arrived through it.
Grouped to a canonical record, with variants visible.
Yes, from Nest, so the backlog has names on it.
The record is kept with its history and marked gone.
Fourteen days, every module, no card. Or half an hour with someone who will run it on your own records and tell you where it does not help.