B. No.

Since these are "design by committee", including this stamp, the whole "sequence the builds" thought goes out the window when "the committee" (a.k.a. the forum) decides to not do the stamp in a future build.

So for that reason, I vote "B. Don't bother."

If BM threw down and said "from now on, forum-design knives will be stamped as such" then I'd agree that it would be a good idea. Otherwise, it's a neat thought that'll wear off soon.