Yes. They gave Cassandra a scar, they gave Varric (!!!) a scar, can Cullen have one too?
I kind of feel bad because it looks like I want Cullen to be slashed across the face with a sword. But it will make him look so cool! Or hot. Or both. You can be both cool and hot at the same time, right?
*Snip*
And I headcanon that since Meredith impaled Cullen on her demonic sword, he has a huge ugly scar, but it can only be seen when you do this 
Agreed! Varric's DAI face model is incredibly detailed and unique, he's even got what looks like a burn across he jawline, it all tells a story, it also fits well given all the fighting he done over 7+ years in Kirkwall with Hawke 'n' co. Cassandra has her scars too, even her eye makeup tells a story (the devs posted up a blog entry about how they created her unique look and apparently the way she does her makeup is meant to symbolise aspects of her personality too... I forget what). Vivienne has no visible scars at all but it totally makes sense for her character, firstly she's a mage so she's almost always attacking from the rear and therefore not directly in the line of fire, and secondly she's clearly very looks orientated so even if she did have scars I could imagine she'd probably cover them with makeup or cast a spell to heal/remove them or whatever. Hell, Iron Bull has a feckin' eye missing!
Clearly that's the sort of approach the devs wanted to take with the companions, I just hope that the same rules would apply to the advisors too especially if they're as important as they claim. Leliana didn't appear to have any visible scarring on her new DAI model but she does have freckles... although looking at her picture blown up big it does kinda look like she has the faintest hint of a scar below her cheek but that could just be the lighting. Regardless, her physical appearance is still very distinctive, there's no mistaking her for a minor npc. Judging from the tiny little images we saw of Cullen and "Scribbles" (the woman in gold and blue) the one that looked the least developed out of the two was Scribbles, but you can't really tell from a distance. I just really want them to do Cullen's character justice- not just from a story/romance point of view, but with his physical appearance too.