Hawke had a speaking voice (so we actually know how Hawke sounds) but his/her physical appearance could vary from the standard/default choices, the Warden was silent and had varied appearances and genders. A workable solution would be to have them appear in Inquisition, but seen from a third person perspective to your Inquisitor. That would allow individual gamers to insert their personal head canon versions into the mix, insure that beloved characters factored in once again and give Bioware a safe out; without the company having to bend over backwards to finagle the computer calculations necessary to make previous file transfer character creations magically snap into place.
best solution for our Warden is death. People will complain if there is no voice, people will complain the voice was wrong from how they imagine, people will complain no matter how our Warden is brought to our attention in Inquisition. If our Warden did Dark Ritual than let our Warden die a Heros death trying to bring proper order to the Grey Wardens amongst this chaos. I see death being the best solution for surviving PC Wardens than the complaining of what they did with the Warden will be easier to quiet down
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Now for Hawke, we only need customization there since Hawke has a solid voice male or female. Whether it will be them teasing us with creating more than the Inquisitor when we start up the game.
Still can't wait for The Keep to open up for more people, I bet maybe the people who tested it out have a better idea whats going to happen with our previous characters we played as lol.