The randomness of effects on items is a different issue, I addressed it more than once. They did not even try to fix it, instead the armor system makes it even worse. Now there are even more pointless effects, that you could get on your weapons and turn good weapon into a hardly decent one.
Also thanks to the broken attributes, taking aerothurg for magic damage would not that effective. You will hardly skill Intelligence, so the damage would be subpar anyway.
And yes, in D:OS2 most fights go the way you expected them to go, even in tactician. Most fights are not fun, they are pure grind, because the stat boost for enemies is pretty insane. If a boss just murders you, if you let him act even once, there is no challenge just a puzzle: How to I neutralize him before he can act. After he got neutralized the fight is pretty much over. Also the only surprises are just skills, that enemies have but you have never seen or heard about. Just like the exploding turtles on the beach. They hardly add challenge and more enforce save scumming. The probably should rename Tactician into Puzzlian.