One of the things I really like about this game is the improvisational combat, being able to chain together simple moves and feeling empowered when you pull it off. Another great part of this game is the enemy diversity. So what if enemies could get their weapons slashed out of their hands with a high enough upgrade for the sword skill tree? Then, if we added more complex enemies, like katana-wielding superfast ninja droids or slow-moving but powerful spear robots, enemies could pick up things from the ground to use as weapons. A ninja droid could be spinning a spear around while dashing toward you, a higher-tier archer could be hurling swords at your face (because they have the little targeting thing over their eye to aid with accuracy?) or maybe they could even use the limbs of the slain enemies as tools!

Just a thought, but I think the game would really open up if changes like this were made.