Oh, I hope so! Since I can't watch any of the German movies he has been in (how in the world can I find them without delving into the world of pirated movies? ) I would like to see him reprise his role as Jaqen. By far, he has been my favorite character in the series, and I believe he shows up in the books again, though not necessarily using his Jaqen persona.
But even if I couldn't see his face, I wouldn't mind hearing his voice! It's just.... I don't know, something about it that has serious appeal for me. Every once in a while you hear a voice that just goes right through you for one reason or another. It literally makes your hair stand on end.
Some kind of magic.
One other time I heard a voice like that in voice chat playing World of Warcraft -- we were trying to get some new guild members, and this guy spoke... I don't know what it was about his tone, but it got to me. I wanted to say, "Heyyyy, I know you're not going to join our guild, but could you maybe read the dictionary to me for an hour?"
Pretty potent stuff. Makes a lot of sense that Tom Wlaschiha is a voice actor. Smooth tones. :) And speaking five languages is pretty darn impressive.