0365 DLP Override Options

Hello after looking through the MS documentation regarding the override option for DLP all I was able to find is that a user is presented with a freeform textbox. Textboxes are good in theory but once a user knows they can just add the letter "a" in the textbox it pretty much doesn't provide any value. And also doesn't help for investigations or reporting because it creates more overhead to filter through this data. 

I would like to see is the ability for the DLP admin to set up 2-3 key meaningful custom values within the rule in a drop-down form for the customer to choose when presented with an override.