Succeeds #59819.

This is currently a draft and needs discussion/refinement

Improved customization flows for synced patterns / Theme bundling of synced patterns

The following issues solve a number of related aims:

1. Themes can include synced patterns, allowing them to take advantage of pattern overrides
2. Users can customize theme provided patterns using the same approach as template parts (Customize / Clear Customizations)
3. Brings more parity between template parts and patterns for a potential future unification (template parts become patterns)

• Patterns: allow overriding of theme patterns as well as duplication #55911
• Add support for synced theme patterns (with overrides) #59272

Related issues

• Synced patterns/Reusable blocks: exporting the theme breaks synced patterns #53806

Patterns as sections

Connects with the work on section styling and zoomed out editing.

• Connect "Section Styling" with "Pattern Overrides"/ "Content Only" locking #62078 / Pattern styles #59404
• Writing and contentOnly modes #60021
• Synced pattern shuffling

Pattern overrides / Block bindings

Continuation of block bindings and pattern overrides.

• Idea: using the group block in synced patterns as a freeform content area (via pattern overrides) #61225
• Overrides in Sync Patterns: expand block support #59607
• Granular control over individual attributes being overridden per block?

TODO: Track anything punted from the 6.6 Beta/RC period. There may also be further UI improvements to pattern overrides to define.

Extensibility

• Patterns: ability to disable creation of patterns for certain roles/permissions #28895

Code Quality

• Patterns / Resuable Blocks and the technical debt #57530