Actually, I don't see the reason for complaining about the possibility of throwing enemies. On the stream, a character with 17 strength was not even able to lift a character weighing 65 kg. Even with 27 strength , the throw range was mediocre at best.
I'm not exactly sure about the conversion rate, but unless something is a goblin or other small humanoid, throwing won't be very effective even at 20 strength.
Rather, I do not assume that after we leave the starting location, we will continue to fight goblins or other small humanoids. The farther in the game there are likely to be more drows, devils or other bigger enemies.
Another thing is that the chance of success itself doesn't seem terribly high either. It is worth remembering that rage gives an advantage in strength's checks (it should facilitate throwing enemies).
On a stream, even in active rage, the chance was quite low and amounted to around 65%.
The highest of what I have seen is 70% and this is only in the case of very light skeletons.