When MapML panel says to "use tiles", but aTCRS grid set doesn't exist, use WMS GetMap for tile requests by default
For new layers, set the default grids to include MapML TCRS
Each layer can be configured to cache and serve tiles in GeoServer. While the MapML panel on the Layer page allows the admin to select "Use tiles", as a checkbox, that doesn't use the GWC tile cache if it is available.
Add support for WGS84 TCRS
Layer groups are very handy, and can be used with MapML, except that you can't configure a layer group to use tile-based map requests. To do so would require adding a MapML panel to the publishing tab on the Layer Groups page.
Set min/max coordinate axis values on <input> included in extent