Option to add Memorial suffix to callsigns

Following on from an interesting post by @FlightGT, I wonder if it might be possible to use the suffix ‘Memorial’ in much the same way as ‘Heavy’ or ‘Super’ et cetera are used today, to denote a flight as such. We all know of some high profile and some low profile flights which we may choose to commemorate in some fashion, and though this is not the crux of the issue, I believe it would also discourage bad actors from using those call signs as political or offensive weapons. Furthermore, I think it would be an appropriate mark of respect to the memories of the dead and the lives of those suffering as a result of having lost loved ones. We might also perhaps come across one that we hadn’t heard of before, serving as an inspiration to learn about it for ourselves