For anyone skeptic of the critical role crew check out behindthevoiceactors to see everything they've done. All of the cast have a multiple number of voices at their disposal that they could pick from but sometimes they also like to do new voices and adapt voices to the characters. They are professionals at what they do and they've probably done some characters you never would have thought them capable or that you couldn't recognize without knowing who played them first. The reason most people are skeptical is simply because they are well known and are good at what they do. We are in good hands.
Now that said and all it probably wouldn't go amiss if we got a teaser of the voice acting (not just for the crit role crew) before the game released to quell some of the fears.
