Invasion Defense should be listed somewhere on the planet's description, in my opinion. Often it can be hard to add up all the invasion defense bonus on well defended planets and then that bonus is multiplied by the legion's bonus to get the final invasion defense. I think that all the invasion defense (with the legion bonus added) that a planet has should be listed as a passive bonus or with the attack/defense/cloak area.

I like the idea, though I think it would make more sense to put it with attack, defense, and cloak instead of with the passive stuff.

Yeah that would definitely work with me - added it to the original post.

although i would like to see it, i also think it adds some sort of tact to planetary defense, often ive overlooked a lazuli pylon and that cost me the invasion. I could leave it or take it being displayed in the defense info.