I wouldn't rule it out, the game gets a lot of money and even if it's not a short term priority it wouldn't be hard to hire some voice actor once more sound work gets done.
Bust nuts to plant seeds
Stroke wood to save forests
Polish pearls to clean oceans
Buff the beaver to make rivers cleaner
Jack and Jill to save a hill
Masturbate for your planet's fate.
I wouldn't rule it out, the game gets a lot of money and even if it's not a short term priority it wouldn't be hard to hire some voice actor once more sound work gets done.
I said 'unlikely', not 'impossible', meaning that there is little chance, not that there is no chance.
P.S.: The new 0.721 alpha version has incorporated female moaning sounds. Check it out on Helmsman's Pat reon.