One of the problems that devs seem to fall into in this stage in the history of gaming, is being too worried to create OP items that are fun. All items don't HAVE to be balanced in a single player game. Anyone who has played BG2 has seen some perfect examples of downright broken items that are completely fine, because its single player. Non-detection cloaks that mean your stealthed champions can never be detected. Broken. Fine. Fun! DOS 2 doesn't have to settle for basic and bland effects on their gear. Its not a moba where balance is EVERYTHING. There is no reason why broken effects cannot be used. You might not want to include them in the arena mode, but there is SO much scope to have fun with item designs. What would be wrong with including items that have 100% chance to add an effect like bleed or slow? I completely agree with the OP, why not completely change up items and make them fun?
For example
Shield: Immunity to all disabling CC. Broken. Fun. Completely okay in a single player game. (even a 50% chance would be alright)
Leather Armor: Melee attackers have a 50% chance to be polymorphed into a squirrel for 1 turn. Broken. Fine. Fun.
Shield: Immunity to all projectiles. Broken, totally okay.
Shield: 50% chance to reflect ranged abilities/projectiles at the attacker. Totally broken, totally fun.
Boots of Kicking: All melee attacks performed get an additional free kick attack. Broken, awesome.
Bear Club: Weapon attacks knock the target back. Broken. Used wrong can ruin your plans. Fun!
Ice Cloak: Taking damage releases an ice-nova that snares (not stuns) enemies within the radius, making them unable to move for 1 turn, but otherwise able to perform actions as normal. Completely broken, really fun.
Cursed Gloves: Melee attacks have 100% chance to apply the cursed debuff. Broken. Really fun!
Fatal bow: 10% chance to instantly kill the target. Broken. Completely Fine!
Amulate: Once each combat, the first time you take damage to your health, instantly gain Armour of Frost. Super fun, absolutely broken, completely acceptable.
It doesn't matter that these effects aren't balanced, because they are fun and they add to the experience. To combat the strength of these sorts of effects, you can up the difficulty of the mobs you face. If anyone has a well reasoned argument as to why these sorts of effects should not be added, I'd love to hear it. What does the community think of adding items such as these?
Note: I'm a bit tired so I apologize for my lack of eloquence