Hi Red Flag , Thank you for the feedback .
As soon as we reach 90% of feature parity between AIP unified labeling client and AIP client we will announce end of support of traditional AIP client of one year . I still don't have any specific ETA for that but will share this information with our customers as soon as we will have final dates.
Regarding the list of features you mention that we don't plan to support in the unified labeling client , let's go over them one by one :
1) custom protection won't be available in office but instead we will offer in one of our next GA releases "user defined permission" feature .The option lets users specify who should be granted permissions and what those permissions are. You can then refine this option and choose Outlook only (the default), or Word, Excel, PowerPoint, and File Explore
2)We are working on a new track and revoke portal but there is still no ETA.
3) Information protection title and tool tip - removed due to low usage , what is your use case here ?
4)DNF button - you have an option to set DNF under "encrypt" button in office ribbon , we aligned it to the new office native built in labeling experience which will be released in the future.