I have a few ideas to make the game a little better. They are not top priority by any means, but a few simple add-ons.
Inside the "edit" mode, it would be cool to see a button for "view enemy mode" to see the base how a random observer would see it, (aka without traps, troops, and collector popups).
Also, a select-all feature would be nice. And maybe some different types of plants/flowers for decor.
My last suggestion is to be able to remove a structure from the base and just have it saved in the edit mode; an example being an extraneous wall or two.