I have update my HA Dashboards to use lovelace-layout-card and it look gorgeous.
I was very happy with the amount of effort I put in to make the dashboard look pretty, functional and comprehensive until I tried to cast that dashboard to my Google Nest Hub and O’boy I was in for a surprise followed by hours and hours of frustration to debug and resolve it.
Eventually I created a dashboard with just 1 entity and changed the View Type between Masonry (default) and Masonry (layout-card) for testing and concluded that any dashboard using layout-card views does not render to Google Nest Hub and is rendered as blank white page.
So I’m left with a mixed feeling where I really love the power of customization provided by lovelace-layout-card plugin but on the other hand it broke my previously working google cast.
I know of 1 workaround but it is unreliable and I would personally not rely on it
1st cast the dashboard with View Type as Masonry (default) and then cast the dashboard with View Type as Masonry (layout-card). It will render but as I mentioned above, it is unreliable and not something to depend on when you have other members in the house using HA on Google Cast.