This one is a touch disappointed to only see "Assassin" in personality. Yes, this one get's it's brand new, but...
Personalities should be unlocked for everyone, without DLC, with lots of choice. Personalities would likely be highly sought after to differentiate people. A few examples...
By DLC
Assassin - plays with a dagger when idle, stance is more alert
Thief - tosses a coin purse when idle, or maybe rolls a coin in the knuckles, stance is more cautious
By Class
Templar - holy light 'fireflies' when idle, stance is more attentive
Dragon Knight - ash cinder when idle?
Sorcerer - dancing light 'fireflies' when idle
Nightblade - looks about cautiously when idle, stance is more cautious
By Race
well, you get the picture

This one thinks having LOTS of options for this would be very fun for people to collect. Maybe some are free, such as ones which come with DLC unlock, or by race/class choice, but others could be purchasable on the store, or tradable like with motifs. (Though an odd concept to trade them, maybe they could be described in the page as crafting styles are described.)
And, with things like character 'skins' becoming a popular thing for micro-transactions, maybe 'legendary' personalities could also be unlocked. Like with the Assassin, perhaps a different or special kind of dagger is tossed around, or with this one's Templar suggestion, maybe a 'holy avenger' where wings of light briefly appear with waffs of holy smoke.