The Valentine's event dungeon also has a Drake Manuscript Armor drop that I swear is rarer than the love rocket and the sweeper.

Wowhead's estimation from their datamining and data gathering says the Armor is a .08% drop rate which puts it lower than the love rocket and the sweeper by a decent bit (after the drop rate changes for the love rocket

Trying to get the love rocket (Which I got yesterday finally) I ran 40+ toons per day last year and this year and I have personally never seen the armor drop for anyone in my groups. I have also never seen a Renewed Proto Drake using the armor

Why can't things like this be on the event vendor? Or have an increased drop rate as well? The drake armor from hallow's end and winter veil had increased drop rates their first years being a thing but the valentine's armor isn't?