web/web_widget_x2many_2d_matrix/readme/ROADMAP.md

• Support extra attributes on each field cell via field_extra_attrs param. We could set a cell as not editable, required or readonly for instance. The readonly case will also give the ability to click on m2o to open related records.
• Support limit total records in the matrix. Ref: https://github.com/OCA/web/issues/901
• Support cell traversal through keyboard arrows.
• Entering the widget from behind by pressing Shift+TAB in your keyboard will enter into the 1st cell until https://github.com/odoo/odoo/pull/26490 is merged.
• Support extra invisible fields inside each cell.
• Support kanban mode. Current behaviour forces list mode.