Different types of bankai

I have observed and noticed that there are different type of bankais'. i have thought of 4 classifications of bankai. These are based on thier abilities after release. the types that i have come up with are...

1. Enlarged sword bankai: this is the type that increases the original size of the soul slayer, explosively increasing their attack power. this is most common in offensive type soul slayers

-Examples: Hihiou Zabimaru (Renji's bankai), Ryuumon Hoozukimaru (Ikkaku's bankai), Konjiki Ashisogi Jizou (Mayuri"s bankai), Kokujoutengenmyouou (Komamura's bankai).

2.Area of Effect bankai: this creates a limited space around the user and the opponents, giving the advantage to the user

-Example:Enma Koroogi (Tousen's bankai)

3.User fusion bankai: the user gains added or boosted abilities because of the fusion between him and his sword, it may also be considered that this is a condensation of the soul slayer's ability in a small form.

-Examples: Tensa Zangetsu (Ichigo's bankai), Dai Gurei Hyorinmaru (Hitsugaya's bankai)

4.Special Type bankai
: this has all of the abilities of the above mentioned bankai. the level of power usage is dependent on the user.

-Example: Byakuya's bankai- (Senbon Zakura kageyoshi-an enlaged sword bankai since it amplifies the number of blades) (Senkei Senbon Zakura kageyoshi-an AoE bankai since it creates an area where the combatants are surrounded by floating swords which has amplified attack force)
(Shuukei Hakuteiken- a user fusion bankai because it is the compressed form of Byakuya's blades in the form of a single white blade that has the highest attack power)

GIVE ME YOUR OWN IDEAS

Hollow Bankai!!

my own bankai control of every thing

the user fusion type is like the one espada member are using what do they call that.. sword release right?

sword realease of a holllow is called = resurrection

yea that one..Im a little bit confuse..hehe

You could also consider Kokujoutengenmyouou and Konjiki Ashisogi could be considered a 4th type of bankai called the summoning type. Because it sure looks like they summoned a creature from the same dimension that the spirits of the zanpakutos come from...(possibly)