These components could be useful: * PostTypeCheck * Show content only on allowed post types * RichTextWithLimit * Limit characters for RichText component * PlainTextWithLimit * Same as earlier but with plaintext component * LinkToolbar * https://github.com/humanmade/block-editor-components/tree/main/src/components/LinkToolbar * A bit different approach: https://github.com/10up/block-components/tree/develop/components/content-picker * HideBlock * Could be something like https://github.com/humanmade/block-editor-components/tree/main/src/components/ConditionalComponent