Cleanest setup is three sheets: products (one row each), features (one row each), and a support sheet with one row per product-feature pair. You can collapse to two sheets if your grid is small, but separating products and features keeps editing manageable as the matrix grows and lets each axis carry its own descriptive copy.

Yes, that is the entire point. The product row is referenced from the by-product view, every relevant by-feature view, and any category view. Editing the product description is one cell on the products sheet, and the change flows to every view URL that includes that product on the next cache flush.

Append a row to the features sheet with slug, name, and description. Then add support rows for each existing product covering that new feature with yes, no, partial, or beta. If you want a dedicated /features/{slug}/ view for that feature, append a row to the views sheet pointing at the new slug. Flush the cache and the view URL goes live.

Yes. Standardize a small vocabulary like yes, no, partial, beta, or planned across the support sheet and render each value with the right visual treatment via list mapping conditional classes. Keep the vocabulary fixed at the grid level so the same value renders consistently across every view that surfaces it.

Yes. SleekRank exposes every generated URL through its sitemap and noindexes the base template page automatically. Submit the sitemap in Search Console once; new view rows added to the views sheet start getting crawled after the next rewrite flush. The base page itself stays out of the index.

Yes. Use meta mapping at og:image pointing to a per-view image URL column, or pair with SleekPixel and a templated suffix so /features/project-management-by-product/ and /features/note-apps-by-feature/ each render their own preview with the view subject without manual asset work.

Carry a per-view intro and methodology column on the views sheet, and inject them via selector mapping. Each view should explain what is being compared, how status values are determined, and when the matrix was last reviewed. Pages that are only a grid with no editorial framing get treated as thin by search engines, structured data or not.

Flag the product row as inactive with a status column the page group filter respects, or delete the row entirely. Flush the cache and the product disappears from every matrix view. If the dedicated by-product page had backlinks, set up a 301 to a parent category view to preserve link equity.