Do you think we'll be able to pick between different voices again?

I'd expect just the one. It made sense to have voice options in DAI because of the racial choice, but that's not an issue here.

Well, it really just depends on if it's going to be a stand alone story or a trilogy. If it's stand alone, then sure. I expect different choices. If it's a trilogy, no. I expect to hear one voice, clear and crisp, like a church bell on a winter's night.

I wouldn't think so, like others said, the lack of a racial choice makes it more likely we'll just have one voice. Personally, I'm perfectly happy with that tbh, as long as the voice we do get is enjoyable and has some character. Being able to pick between two preternaturally calm and lackluster voices instead of one in DAI didn't make much of a difference to me in the end. Cool idea but ultimately felt like a waste of resources (obviously just in my opinion, ymmv.)

No reason for that. On Dragon Age Inquisition it was necessary since all protagonists were diferent people but here there is only Bro/SisRyder.

Oh, it's far too late to hope for that. They are definitely going to be predefined. We don't even get to choose a backstory since Bioware is forcing a family on us. 

They can't possibly handle it any worse right?

...right? 

I dont think there is any chance of getting a choice even if it is a stand alone game. Firstly, as others have said, there is no racial selection, you are human. Secondly I feel in mass effect you have always played a more well defined character with more story hooks than in DAO or DAI. DA2 was the exception where you played Hawke, but in that case you didn't get to choose a voice either. Andromeda appears to follow this with your father and sibling set for roles. Say you play a male, you will still hear the female voice actor in the game or vise versa.

You may get to make some choices, yet. Wait and see before you get all bummed or decide how "poorly it's been handled". Even if the backstory is relatively defined, are you really going to be all that disappointed if the game is amazing? Likely not, right?

As to the multiple VAs question; I agree that it's unlikely to happen. It would be a waste of budget and time for a game that features male/female human, rather than both genders of four different species/subspecies. I hope I really like these VAs. I wasn't a big fan of the DAI VAs, excepting Alix Wilton Regan. The brief snippet of bro-Ryder's voice was not impressive. Hopefully, I'll learn to love him.