Missile Assister shows as 13 mass, but only adds 9

Edit:  For some reason the image insertion thing does not seem to be working on the GC3 forums. :/  Click on the image to link to my imgur upload.

Mass for a lot of components is similarly exaggerated in the tooltip versus what actually gets consumed when you use the component.  On a Tiny hull, a Durantium Composite Armor defense module shows 11.5 mass would be consumed, but adding the component only adds 5 to the design.

I do have various miniaturization techs; perhaps the tooltips don't reflect the component miniaturizations?

Basically, what is happening is that something will advertise its base mass but what it actually uses applies all the various bonuses you have.

What I think the UI should do is update the advertised mass to be what it will actually use and then put into a tooltip what it would have orignally consumed without your tech.

I agree.

Yes, this would avoid a lot of confusion. I always design my own ships when I play.

Likewise, AI ships still don't balance ship defenses. :/