If they're going to add RNG to the game then they need to make sure the game is covered in RNG so that any action can be come a bad decision. Divinity only has 1 major combat RNG being the dodge-hit rate and 1 minor RNG being the freezing floor that works almost every time anyway.

So in a game with minimal RNG, if you want to add changes that are indirect but also consistent. You can't add RNG because with so little RNG being presented, the players will just do whatever they can to completely eliminate the RNG and enjoy the profit that comes with it.

It's like imagine if Blitz attack is changed to hit 1-3 targets with 50% damage increase if it hits only one target. People will just use it as a single-target attack spell instead of gap closing.