Bleach: Hollow Flash

Well Rangiku's zanpakuto would be nice to add. How to add it i'd say since it's similar to blades it could use a similar mechanic. IT could spawn about 6 smoke cluds that move where ever the user clicks and when they press attack what ever is within the smoke is cut maybe ignoring defense.

Hitsugaya zanpakuto's hyoten hyakkaso - It sometime slags a bit so i was thinking instead of making the ice spikes it brings down stop in one place why not make them walk toward the target a bit slowly as each one hit they freeze a little more slowing them down and doing damage

Aizen Zanpakuto's complete hypnosis - It works awesomely but it tells everyone around them that they've done it. If it would only tell those who had a higher reiatsu amount than the user that would be cool. Instead of leaving a undense clone of yourself standing there why not make a dense clone with the same amount of health as the user while the user becomes invisible. If the clone dies the user should become viable again immediately.

Aizen Zanpakuto's Clone creation ability - Why not give it an attack option. With the attack option the clones would go up tot he person like they would using stalk but it'll look like they are attacking and you'll see actually damage over head but no damage would be done tot he person being so called attacked.