I found Tactician mode about right. "Good enough" for me. Even when you figure out ways to make the toughest fights a breeze, they're still generally quite intense, enough so that you should still be able to enjoy them.
If you look up essential mods for DOS2, there are two mods called "Enemy Randomization" and "More Monster Spawn", which sound like exactly the kind of mods you'd want. So no worries either way.
