The AI will demolish things as your Fleets get closer. Thus the empty tiles and seemingly useless builds.They were useful until the AI demolished the supoorrtung buildings. Scorch and burn policy. And maybe put some salt in the crop soil.

Once you arrive it looks lame and you think what good is this to me?!...Exactlly!

There should be a rubble icon on the tile.

-Wade

(The spaces still aren't showing in a new post. I'm attemting to adjust my post.)
(Also, an edit does not show until we click on edit again.)
(OK. clicking on edit yet again will put in your spaces.Please fix this.)