Have no personal interest in the Eternal Bonding thing, but I don't see why they shouldn't throw some updates to it. Change the anniversary around a bit? Sure, why not.
I wouldn't really like having the exact same event for every holiday every year, so see no reason why bondings can't get a little love, even if it affects a smaller number of players.

As a person having no interest in it, I've no idea how it works. Can you customise the ceremony in any way? Change colours, music, stuff like that? Basically make it "your" ceremony instead of "oh this looks like everyone else's" ceremony? Genuine question