Organisation in edit mode

You guys know what I hate, when you have many building and you want to place everything down in the right place in edit mode. It is so annoying when you want to place down ( for example) all of you wizard towers. But since on of them is a lower level, you'll have to put one two towers down, scroll over to the other side of you buildings, and then place the last one. There should be some organisation in the edit mode.

SO, the TH should start first ( because you need it most)
Then the defenses next...
Then the walls...
Then everything else(doesn't matter the order)

Once you've placed a building and you remove it, it'd go back to its section.
(And if this would be annoying for some people, there could always be a setting to alter the order or have there be no order at all)

Hope SC inserts this because it sure wastes a lot of time doing a lot of work in edit mode.

Just tell me what you think, I'll respond and we can all be BUDDIES