lol Now you're just gettin lazy Sin, clicking with a mouse getting too hard? 
But that would be hell on the cpu lol
Anyway I agree with the optional settings for the show/hide craft/structure idea. But there is also a small issue with it.
To select a specific group of ships to attack a specific structure or group of structures you would need to toggle the settings. Most likely it would also require the startup of a second "empire tree page" or some sort of tab on top of the empire tree, then it's going to be like running two empire trees causing double mem-usage of any and all things that pop up on that oh so obnoxious lag box. Though it has it's uses and the game would be a bit"what, where? something happened?" if we didn't have it.
In any case, it's not a bad idea, but it would put a bit more mem-usage on a game already holding a small limit for it(as far as these days go). If it caused no change in performance I'd be on it like Jared on ho-ho in a relapse. But, till Jared gets doughy and rolls I don't think it would be very possible ;.; *crying* I could really go for Subway right now
