The new accessibility features allow us to set standards across products and use existing scripts for testing. 

The REST API features allowed integrated testing for select products to quickly make calls and test the UIs with API calls while the CLI allows us to matrix the grid function across browsers.  

We also use the scheduler to trigger runs when environments are expected to be available so we do not need to manually trigger regressions. Shared steps allow testers to leverage repeated steps across tests.

The pre-defined tests are a great help, specifically the custom JS test that allows us to be able to use custom code to test complicated elements or scenarios.

The record and playback are great features. It's also easy to automate the use case.

The most valuable feature is the base algorithm that allows the test to keep passing when we have small changes in the elements or in the UI (test, not break for no reason).