If you compare it to something like Mass Effect or The Witcher, it's incredibly impress. But compared to Pillars of eternity, any of the Pathfinder games, etc, it's disappointing in my opinion. At least by having a silent protagonist we can imagine our character's tone.
I am actually on the opposite spectrum from you - because I find conversation options underwhelming I am disappointed that they will not be voiced. Even a silent protagonist requires character in its writing, and I was hoping VO will fill what is lacking in written text. It’s an awkward middle ground, where I neither get a mouldable custom character, nor a compelling pre-defined one.
Having more varied voices to pick from is good though.