There is a way to add required data into the fast tab header so that you can view the required data without expanding the fast tabs. This can be done using personalisations.
Incorrect entries are very common when you enter loads of data into the system and this happens with everyone. Microsoft knows this and hence they provided some useful tool in the form "Revert". There is an option in D365 where you can reverse the entered data (Create/Update) to a record.
Functionality aside, Microsoft is adding more features to improve user experience in D365 Human Resources. These cross-app features are also available in D365 Finance & operations. Saved views, Full page apps, Optimised "is one of" filtering experience, Recommended fields, Sticky default actions in grids, Attachment recovery