That's a good question! I can't think of specific names right now, but I'd love a male dwarf voice that was deep, rich, and with a British or Aussie accent (there's no logical reason that surface dwarves should all sound like they're from Orzammar after all.) I'm keeping my fingers crossed to get Harding back; lovely VA. But I'd also like a female dwarf voice that does NOT sound like NE US and with some range outside of infinitely cheerful and "perky," sigh. They've gotten themselves rather stuck in a very limited mindset when it comes to writing and casting dwarves. Even elves in DAI get a much wider range of accents, voices, and personalities - from Briala's smooth Orlesian tones to the Dalish on the Exalted Plains to Sera.
It'd be nice to hear a surface dwarf without an American accent. I think all we have is Bodahn, and he's originally from Orzammar isn't he? The all-pervasive American accent for dwarves, including ones who've been surrounded by humans their entire lives like Harding, bothered the crap out of me. I've never been able to convince myself to use the British VA for either sex because loooore. That said, I'd still love for Scott McNeil to voice a male dwarf PC. He has this great, gravelly, emotive voice.

Though, I didn't get much of a perky vibe from Montano. Dagna, Harding, all the other dwarfy girls though? Definitely.
I remember back before DAO came out the devs we're originally going to give dwarves German accents, but I guess it was too much of a pain in the butt to implement. Maybe Kal-Sharok dorfs will have German accents?!