Hello Rudy,

This is something we intend to look into, even though it seems Microsoft are pushing razor syntax (mvc, razor pages, blazor) away from drag-and-drop designers - one has never been available for this language. You can Follow this page for status updates and information. You can also monitor our Roadmap and plans in the following page (it will soon be updated with the R3 2020 plans): https://www.telerik.com/support/whats-new/blazor-ui/roadmap

You may also find interesting the following request where the goal is to let users define some layouts for a dashboard type of an app, especially if this is something you actually need to do: https://feedback.telerik.com/blazor/1431588-dashboard-layout-component

Regards,
Marin Bratanov
Progress Telerik