Plan for Metatag 8.x-1.0-beta10 release

Can metatag panels be taken into the next release?

In Drupal 7 we could specify metatag for custom pages made in pagemanager. Due to export issues with features we always used metatags quick.
Because of the state that metatags quick is a duplicate of metatag I would like to see the page manager feature back in the metatag module.

Would it be possible to clear up some w3c validation errors? At this moment, inclusion of the metatag module leads to the following html validation errors:
- Error:: Attribute “xmlns:article” not allowed here.
- Info: Attribute with the local name “xmlns:article” is not serializable as XML 1.0.

These are defined in the metatag.module file in the following lines:
// Namespaces for OpenGraph.
$namespaces['xmlns:article'] = "http://ogp.me/ns/article#";
$namespaces['xmlns:book'] = "http://ogp.me/ns/book#";
$namespaces['xmlns:product'] = "http://ogp.me/ns/product#";
$namespaces['xmlns:profile'] = "http://ogp.me/ns/profile#";
$namespaces['xmlns:video'] = "http://ogp.me/ns/video#";

EDIT: Added as new validation issue (https://www.drupal.org/node/2753595) as per DamienMcKenna's suggestion.

Now metatags can not be added with per node and can only be defined globally on per content type. Is it possible to reinstate the earlier functionality of drupal 7 where it was possible to define metatags per content basis?

Once #2752239: Fix console commands lands, I'd like to see a new beta. Too many sites use drupal console and without that patch, console simply dies a painful death.