I think the difficulty is fine until your characters start coming online. The difficulty feels where it should be up until about level 5. Once you hit level 5 it just becomes easier and easier as you level up. Increasing mob hp I feel is just making enemies "bullet sponges." it's artificial. I think a few things could definitely make the game harder. Less gold, more xp needed to level, more resources needed to craft things. Less camp supplies scattered around the world or even more camp supplies needed to long rest. Having oils basically a necessity in order to beat certain encounters could be added too. Even on tactician you never need to use oils. I also agree that having all the information about an enemy is kind of weird and should be removed on tactician or removed on an even higher difficulty if it was added. Not knowing HP, not knowing resistances or % hit chances seems like it would be REALLY fun to try out.