my ‘take’ on what these could be…
Dashboard Card Blueprints (DCBs) are a ‘light weight’ integration like Automation Blueprints.
The UI and creation method would be the same allowing for the same ‘fill in the blank’ style UI.
DCBs would also allow for auto install and modification of scripts, automations, scenes when they need to accompany the Dashboard Card. Thus, install, config and (when needed) removal would automatically handle these also.
If Dashboard Card Blueprints (DCBs) were implemented just like Automation Blueprints (visual user interface) they’d be used at least as much as Automation Blueprints… which I think are critical to HA, and are a great way to help everyone (new and experienced users).
Creating and using DCBs, in most cases, would be less effort vs automation blueprints.
… Dashboard cards typically have fewer options/variables than automations (YAML code is far smaller than complex automations).
… Dashboard cards are ~95% visual format/layout (which could all be pre-set in the DCB or have some easy options if the author chooses) and the remaining 5% is sometimes logic (conditional show/hide, string substitutions, etc). So the main user input would be to select the entity, or set of.
This results in providing plug-in-play for the hardest part of making dashboard cards… finding which integrations to use, and how to combine one or more (custom) integrations syntax variations and/or templating, and the visuals which card be difficult due to syntax and/or idiosyncrasies in CSS/Markdown/HTML and card-mod… including that some integrations do no support some/many things that others do … and all the variables/combinations of these together can be extremely challenging.
Example one card I just created that I would make into a blueprint which combines multiple HA elements (Helpers, Automations, Dashboard card)…