If you don't want to save scum, either play honour mode or just don't do it.
Me and my friend like to explore and test stuff. So we sometimes save just in case everything goes wrong. Sometimes we forget and just need to redo a bigger part of the game. Like the one time he sneak into the possible ambush, I followed and forgot to sneak, starting the ambush with him in the middle. But we would never save scum every chest and every attack, that is just stupid and a waste of time. If one attack can ruin everything, you need a better plan. The times were everything seems to go downhill and you real need to think about how to save, are the times we enjoy the most, thats why we hope tactical mode will give even more reason to save and reload a fight. :)