Hey, @robredwood! Thanks for writing in and for the kind words! We’re glad to hear you’re enjoying Loopers. 
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You are correct, using our “The Excerpt” dynamic Element (which is just a Text Element with {{dc:post:excerpt fallback="No excerpt"}} set as the content) does not automatically include a “Read More” link or anything of that nature. This is intentional, as our goal with all Elements moving forward is to try and give the most granular version of that piece possible. The reasoning behind this is that, for this particular case, some people may wish to have some type of “Read More” output, while others might not. And of thos who do wish to have something akin to a “Read More” blurb, they might want it styled many different ways. Some may wish to place it inline with the excerpt, while others might want to place it below as you’ve done. Some might want it to be styled more like the text it is referencing, while others might prefer it to appear as a Button. Some people might want to make that “Read More” link the only link you can click to get through to read more, while others might want to use our new linkable Structural Elements and apply the permalink to the whole Element itself. You can see that there are many permutations to how someone might wish to implement just this one variation of a design, so that is why we attempt to not make any assumptions with how something “should” be output, because each user’s use-case is different. What you are doing in your example by manually adding the text is exactly what you should be doing in your case, so you’re right on course there!
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I’m not entirely following how the data is being structured on the backend in your situation, but if you’re wanting to output a client’s name for a project, you would effectively need to register a way to output that. If you’ve created a Custom Post Type for managing this data, you could add a field where you could input that name, and then you can reference that meta value using Dynamic Content. For example, maybe you create a meta key for your Custom Post Type of _my_customer_name and then you could reference that with {{dc:post:meta key="_my_customer_name"}}. Or perhaps you’re using ACF to add fields and you could reference that field’s key with {{dc:acf:field field="_my_customer_name"}}. All of these Dynamic Content tags can be found in the Dynamic Content modal when it’s opened up, and you can browse through to see the many options available:
And anytime you see that cog icon, if you click that instead of the item itself, it will take you to a secondary screen that can guide you through a few options to customize the output as needed.
Hopefully this helps to point you in the right direction. Cheers!