You shouldn't have too much problems finding the missing functionality that I listed. Here are just a few of the hits I got by searching (quickly). The rest are out there. NOTE: The vote totals may be low on the individual items below, but when searched a few times you will find many requests for these functionalities in aggregate.
Drag and Drop Contacts: https://feedbackportal.microsoft.com/feedback/forum/ad198462-1c1c-ec11-b6e7-0022481f8472
Drag and Drop order of Contact Groups: https://feedbackportal.microsoft.com/feedback/idea/f5ba0d0f-272e-ec11-b6e6-00224827bbc2
Using AD Dist Lists for Contacts: https://feedbackportal.microsoft.com/feedback/idea/3bacaa70-272e-ec11-b6e6-00224827bbc2
Enable option to expand/collapse contact groups: https://feedbackportal.microsoft.com/feedback/idea/c09e0921-272e-ec11-b6e6-00224827bbc2
Enable the download function of files to allow users to select the destination: https://feedbackportal.microsoft.com/feedback/idea/75bbb95f-1fc7-ec11-a7b5-0022482aae9f