There already is- the character called 'Rin' in the trailer and ZiggyD's video is clearly Tora and her VA (her portrait is a red herring, the actual character they call Rin is a girl with horns that fires a bow, for one...)
EDIT: just to 'justify' this a little: Look at the character model of the syndicate member at 6:50 and the fight leading up to it in ZiggyD's video: https://youtu.be/o_bsqgXKGAU?t=410
Clearly, the character model doesn't match the portrait that shows up when he clicks on her - at all. You can get an even better look at the character model at 0:23 in the official trailer: https://youtu.be/d8Cpi4dFjm8?t=23.
Now, compare that character model to the current Tora model: https://d1u5p3l4wpay3k.cloudfront.net/pathofexile_gamepedia/e/eb/Tora_npc_screenshot.png?version=007c82d54a1fb26405ec6a98c0e6be74
And listen to this character's VA in the official trailer: 0:31 https://youtu.be/d8Cpi4dFjm8?t=32 and 2:40 https://youtu.be/d8Cpi4dFjm8?t=160 Then compare it to Tora's current VA: https://www.youtube.com/watch?v=ZdYkXTwzLS0 It's pretty damn similar.
Nice investigation there. The Order of Djinn wants people like you.
We used Tora's model for Rin in the promotional materials because Rin's model wasn't ready when we were filming it. "No one will notice"