to answer the 2 way databinding question myself Matt has a great blogpost https://dev.to/mattbrailsford/reusing-umbraco-properties-in-umbraco-v14-15b7 and a complete sample is even added to the github backoffice repo https://github.com/umbraco/Umbraco.CMS.Backoffice/blob/main/examples/dashboard-with-property-dataset/dataset-dashboard.ts