#58 Cape Engano Chiyoda - Done

Decoy - in the air attack phase. If no aircraft are based on this unit. Select 3 local or adjacent enemy aircraft. Those aircraft have -1 on each attack dice or roll 1 fewer torpedoes

I can get behind this as well... makes you WANT to bring it forward and keep next to your key ships.

Even better!!! 

Hey Mikey, I think he likes it!!!!

In a line with texasarcher—is the meta we want around this unit to be: "this unit must be attacked first, or else your attacks will be less effective" (because you get to roll fewer dice—I find this option a less fun way of playing)

I would much rather use victory points as a means of directing player focus: "If this unit bases no aircraft and wasn't attacked this turn, score X points."

This puts the decision into the dimension of time, rather than that of attack-power (this allows the Chiyoda player to get more value out of their remaining units, since they have to sink fewer ships to hit 150 points).

Another alternative could be a light search check, or something similar like—
Carrier Decoy: (v1) If no aircraft were based on this unit at the beginning of the turn, roll a die the first time your opponent would place a Bomber in a sector not local or adjacent to this unit. On 5 or higher, they place that aircraft in this unit's sector instead.

Carrier Decoy: (v2) Once per turn, choose a friendly Ship. Enemy aircraft get -1 on Search Check rolls when placed in that unit's sector.

Carrier Decoy: (v3) Once per turn at the end of the Sea Movement Step, if no Aircraft were based on this unit at the start of the turn, choose a sector containing friendly Ships other than this one. For each aircraft placed in that sector, roll a die. On a 1, it rolls one fewer attack dice this turn.

What about using this as a basis

GUARD THE CONVOY: While this unit is in the same sector as a friendly Auxiliary unit, enemy units can't attack that Auxiliary unit until this unit has been attacked at least once in the same phase.

New SA: While no aircraft are based on this unit. Enemy units can't attack that local or adjacent ships until this unit has been attacked at least once in the same phase.

Kaiwa Chiyoda 1943
Speed 2
Carrier cap 1 (30 aircraft)
MG 5 5 4
AA 7

A2 v9 h3

Fighter Cover 5

New SA: While no aircraft are based on this unit. Enemy units can't attack that local or adjacent ships until this unit has been attacked at least once in the same phase.

Is that the right name? I dont know anything about japanese grammae

Interesting.