The most significant addition to Web Authoring for 2018.1 is the ability for creators to connect to new data sources directly on the web. You can upload excel and CSV files, as well as connect to 25+ relational connectors withouth desktop. We also added the "data source" tab to do basic data prep. Finally, we added the sort data dialog to have even more sort options for web authors.
I would love to hear more about your experience using web authoring. We are working hard to make the experience better with every release.