I think there is a rather simple solution for everyone in this thread:
- if you want to hit regularly and come through the story without much optimizing take a low difficulty whre AC and attributes for enemies are lowered but keep their HP as in DnD ruleset - if you want to play hardcore DnD take a higher difficulty level with pretty much all stats as in the rules (there will be a few deviations but that is unavoidable) - if you want a high difficulty but a game mechanic based on bloated HP stacks and safe hits as 95% of all games out there just play one of them or wait for DOS3