Dungeon drops character bound?
Because character bound = grind and grind = longevity in an mmo.
I am not sure it is bad to have at least some titles that indicate proficiency in a particular class. I would also wait to see the actual titles. For example, “Realm Defender” or “Ultimate Chaperone” is a title that would make sense account-wide. On the other hand “Battle Magician” or “Invaders’ Stalker” are not appropriate for a warrior toon. I realise the example is extreme and the imaginary titles are not very inspiring, but there could be profession specific or even race specific titles that would by nature need to be character bound. Or titles related to the skills that are character bound.
PS: Fractal reward lvls are character bound (and thus your ability to start a specific lvl instance), even though the items from fractals are not. I also think the ability to enter explorable dungeons after having done their story mode is account bound, but I am not 100% sure. Both of those relate to what that particular character has done.