I didn't do it for being exciting, I did it for being usefull like for documentation which is a nightmare in big corps projects where they invest dozens of millions euros each which 50% are wasted to wander though code trying to trace back to business requirements ;)
Yeah? I'm just not quite sure how putting HTML-code into blocks is really disrupting this market. Tell me, what your thing can do, what you can't do with a run-of-the-mill templating library/processor and a json for input? It's just not clear, which usecase this solves – there's a ton of mature, stable and feature-ladden options if you want to document code and even more if you want to create human-readable documents with a logical structure (even without resorting to writing all the content in HTML). And most of this solutions even allow you to extend their domain-specific language with your own code, take a look at LuaTEX, pandoc, ...