Thanks for building Handsontable! It's been essential for quickly prototyping this project and I'm a fan of the API design.

re: scraping, it's true that semantic HTML makes things easier, but we've also been building site adapters for a variety of modern sites that use frontend frameworks, "utility CSS", etc. Most promising solution so far is something I'm calling "AJAX scraping" -- observe the JSON request made by the client and just directly extract structured data from there.