when it comes to zen no ido, reminds me of the third Iado kata: Uke Nagashi. This jutsu basically grants the user leg weights speed and allows them to side step with that speed while quick draw cutting the opponent, making it an effective counterattack. this can basically be done freeform but knowing the benefit of using a jutsu during battle, it would cause the opponent to use their imagination more and cause them to make a creative counter to this technique while also using a jutsu since you need a jutsu to avoid or defend a jutsu.
Now the second technique is a very interesting one. I have to give you your props on making this technique! Now on it's functionality, the user exudes powerful chakra from their body not using the samurai sabre technique or Iado, making it weaker against elemental techniques. This is best used against taijutsu and ninja tools when it comes to its defensive properties. This can also be used to avoid a technique with it's flight ability. i didnt get to see the speed of the flight so i would assume that it would be the same as the user's current running speed.
With the third technique it reminds me of Genji from Overwatch. i dont know if you play that video game. But using the Samurai sabre technqiue and the Iado technique. With the quick-draw cut, you create two dragons each corresponding with their own sword. you could use in a defensive manner by spinning to cause the dragons to surround yourself to defend yourself, and the attack is you using the technique to send the technique to the opponent or their jutsu by extending the blades toward them and being able to control the movement of the dragons with the movement of the users blades.
when it comes to the forth technique, the shape of the jutsu is going to be of a tiger as the user quick draw falling vertical cut or with the quick draw thrust. the first would send the tiger falling upon the opponent and the latter would send the tiger sprinting towards the opponent before striking the opponent by cleaving the opponent with their claws or by sinking their teeth into them to grab hold of the opponent.
The final technique, nice. The user makes a 360 quick draw lateral slash while releasing the samurai sabre technique around himself before stabbing the ground to complete the formation of the black tortoise. The technique is use as an absolute defense against techniques of the same rank. The user will not be able to notice to opponent from inside of the tortoise shell which can be bad since samurai will be fighting against a ninja, warriors of stealth.