Some more feedback:

* Explode module does not work in some cases. It shows no fields above the data preview.

* In between 'Import' and 'Visualize' steps on your website features section, you can think of having a 'Transform' step, which will sit well with ETL and ML folks.

* It'll be nice to auth via GitHub or just simple email (magic links), instead of Google only. GitHub auth will also allow you to support direct repo load and save for user's pipelines with change history.