I think the "policy" of whether or not a memorial for a death by suicide is a regional thing. I have lived in several different areas of Canada and each congregation was different.
Moncton in the 80's a brother committed suicide and I was told to not even say his name, it was considered so shameful. Calgary in the 90's, the talk at the funeral (in a kingdom hall) was all about throwing our burdens upon Jehovah ( gag me).
This is much the same about the memorial every Nissan 14. The congregation in Fredericton was very old school. My mother wouldn't let us listen to music or watch tv that day. The next year we moved to Halifax and I remember my mother being horrified when we were invited back to another family's house for coffee and tea.
Nothing changes the fact that a young man is dead. Makes you want to reach out and hug your loved ones.
Bobbi