We have a project template where we can add support for Server and Webassembly

[mkArtakMSFT]

• We need to decide whether we want a single template, a new separate template, or multiple templates.
• We want to keep supporting scenarios where your whole app is webassembly/server and you do not care about adding "islands" of interactivity into the page.
• We want whole server/webassembly apps to leverage the improvements in server side rendering even if they aren't using an "islands" architecture.

[nakamacchi]

I want to vote a new seperate template for Blazor United, i.e., keep the existing templates (Blazor Server and Blazor WebAssmbly) and add the new Blazor United template. The reasons are below.

• Developing Blazor apps which can work both in SSR/CSR mode will require significant efforts and careful development. (Not all applications require the SSR/CSR unified model.)
• To use the static web hosting model, Blazor WebAssembly model will be required.
• Single template will cause application migration effort from .NET 7 or earlier.

[sab39]

My suggestion would be to keep the existing templates and add a new separate template for Blazor United, but also provide a clear and discoverable migration path to turn existing Blazor Server or Blazor WASM projects (whether created before United was an option, or created with the new version) into United projects.