I feel like they have to make adjustable settings:
- Increased HP on/off
- Lowered AC on/off
- Other debated aspects that could just be toggled
If you start putting a toggle for every single feature in your system iit will quickly turn into a swamp of core design.
It will probably be the case cause Larian stated they will add difficulty modes. So there will be story, classic and tactical. And in tactical, they will have lots of HPs and their normal AC I guess.
It's also very interesting to notice how disparate the combat feels for players. I for one have no issue with bloating and I find the combat already too easy. So I hope enemies will keep the HPs they have and will have better AC and better Attack bonuses in the highest difficulty settings.