Will we have at least one cute woman companion in DA4?

In my nightmares, I always see Peebee's face.

No because every second rate character artist was working on that game, so they all looked bad. The 'A' team was on Inquisition. 

With how all the post-DAI content has gone, I’d say Charter is looking more likely than Harding.

Ooh, a tweet. Meanwhile Charter’s been in comics and now the book. Not to mention Trespasser having her be Leliana’s heir of Spymaster (also tweets).

You do realize your own arguments can be used against you, right? For example most players sided with the Mages so most don't ever hear of Calpernia, so by your logic that disqualifies her. 

I should point out my argument isn't saying that Harding wouldn't show up. It's just Charter is more likely than her. In all honesty I expect both. You're the one who goes there can only be one. 
As for Harding getting no mention, no I don't think it's quite strange. She wasn't needed, so why have her? 
You can argue that, though the argument makes no sense and holds no weight. 

Never said Charter would be a companion. I've always said I saw her as being an adviser, like Maevaris. My list so far is: 

As for the last cutscene, three things:
1. By that logic, every LI other than Solas will show up as a companion. 
2. Things change over half a decade. 
3. Again, never said Harding wouldn't be. 

While they've definitely positioned Dorian to have some role in the next game, it's not likely as a companion. BW doesn't like having companions who were potential LI as companions again in a following game.

Harding would be the more likely pick for a companion in DA4. Charter too if they wanted.