I've been thinking about this but i have the idea to create a '11.ai demo campaign' i.e. , similar to the custom level that you can download in entropy zero: 2. Like: a Half-Life Induction, a mod that contains vignettes of Pre-disaster black mesa, with fully custom voice acting(for better or for worse, you decide) but replace it with 11 lab's vocal cloning.

But hey, you *could* just use the og Voice actors. (if you can)
Anyways, you could just share your opinions