I’m not sure what you mean by this. The Reflowing sizing for dashboards is technically responsive. See my example here where the same dashboard works on a regular phone and a square Galaxy Fold through clever placement of certain tile sizes:
You can always create a Feature Request, but please note that it would need much more clarification than just “responsive layouts” along with example use-cases to clarify.
Many community members use the “Add to Homescreen” or “Shortcuts” feature of their browser to add an icon to their homescreen that jumps directly to their desired dashboard.
Some people have a primary “menu” type of dashboard that’s used as the main dashboard that they link to and then have additional “pages” by linking to other dashboards for more details.