Request for Mozilla Position on an Emerging Web Specification

• Specification Title: CSS Cascading and Inheritance Level 6 (parts about @scope).
• Specification or proposal URL: https://drafts.csswg.org/css-cascade-6/#scope-atrule
• Caniuse.com URL (optional): N/A
• Bugzilla URL (optional): N/A
• Mozillians who can provide input (optional): @emilio

Other information

At this time I'm requesting a position for @scope only, not including:

• Scoped Descendant Combinator, e.g. .a >> .b.
• Selector Scoping Notation, e.g. (.foo / .bar) .a { ... }.