Alix is a talented voice actress, of that there is little doubt. The video is nice as well. I am also curious to see this transgender they are talking about. I liked Mae in the comics and this seems to be a different person.
However, if people ask me to choose between a voiced protagonist or a non-voiced protagonist, I will pick a non-voiced one any day, regardless of the quality of the voice acting.
Fact is, non-voiced protagonists cut the costs down, allow the protagonist to have more dialogue options and adds greatly to roleplaying.
Having the voice is nice but personally, it is unnecessary to make a good RPG game.
Non-voiced protagonists is the reason why I still like and still play games like DA:O and TES to this day.
I'm on the side of the voice protagonist myself. Bioware games have spoiled me in that regard. I played SW:TOR for two years and then went to try out Wildstar and I just found the lack of voiced characters to be jarring. Maybe I'm lazy but I didn't bother reading any of the quests I grabbed, I just accepted and moved on. At least with TOR, I found myself interested and engaged with the quests.
It's particularly jarring in Origins, something dramatic happens and your character just sorta pantomimes a gasp or outrage. It was just pretty ridiculous. I want to hear my character say something versus acting like a mime on a saturday in the park.
Obviously, the roleplaying is a factor because sometimes the dialogue doesn't offer choices that you would necessarily choose and you're forced into it. I get it but therein lies the joy of head canon 
Voice acting is one of the things that separates Bioware from its competitors and I'm personally thrilled at the level at which they cast people. I get an interactive story with people like Kate Mulgrew to play with, that's absolutely fantastic in my opinion. It's not just Troy Baker and Nolan North doing all the voices like it seems in some games! Honestly, I kind of hope that more developers will start taking this approach with their games by providing a well cast and well directed group of voices.