A logic-less template is easily done, by exposing a few methods to the programmer providing the data. I remember Android XMLs to be logic-less and while it refers to concrete classes, something like this could easily be adapted to generate text. A designer wouldn’t need conditionals or loops because he could mark something as a container, the goes on to design the content (for loop, each cell). Desktop and Mobile had this for ages.

I’d be more than happy if a more powerful version of figma existed (capable of handling UI states). Then the designer would then hand the design files annotated with IDs to me, and then I could go on to implement logic. If we agree on some sort of contract for the UI, he can go play to his heart’s content with the Look and Feel.