Automatically connect to new dashboard

A common workflow for me when using distributed is to layout my JupyterLab with a couple of `dask` panes so I can keep an eye on the cluster. I'm often starting new clusters and pasting new `/status` urls in the `dask-labextension` sidebar. When I paste in a new url the current `dask` panes show a 404 message and AFAICS the only way to get them to recognise the new connection is to close the existing panes, open new panes and then recreate the layout as I had it previously.

It would be great if the `dask` panes could recognise a new url and connect to it automatically. If there's a reason that can't work automatically, perhaps rather than a 404 message the panes could have a refresh button which would allow them to connect to a new url?