I like that it's open source software which is easy to install with minimal configuration needed for running in our environment (AWS).
The UI can be improved by adding more icons or making some of them bigger/more prominent so they are easier see at first glance when you have multiple tabs opened up as well! In addition we also use this tooling along side other tools such as AWS Glue Data Catalogs & Athena etc., but being able extract data from different sources into one place makes life much simpler especially if there were many steps involved before getting your final result set back out again via an API call - otherwise having all these individual step would make things messy very quickly!!