For me, I see a few similarities between playing as Clem in the 2nd Walking Dead season by Telltale, and now Ellie in TLoU2.
With Clem in TWD, it didn't feel right when making the 'bad' choices. She was around 10 years old, been through the trauma of losing everyone in the 1st season and her parents, and soon afterward is making dozens of 'negative' decisions in the 2nd season? Seemed completely out of her character.
Now for Ellie in TLoU2, she's what 19 or 20 now? Probably around 120 pounds? And fucking up hundreds of grown men who are twice her size?
Yeah, she's using stealth, and the clear size and numbers disadvantages may add to the sense if danger, but if it seems like we're playing as Joel with an Ellie skin, its not going to feel right.