I recommend you build all the decorations and put them at the edges of your base so that the enemy's troops take longer to get to your buildings and the defenses can wreck them
It does make it more difficult to redesign your base with all those decorations cluttering the space though.
Is there a way to delete unwanted decor if you reorganize your base? Or are we stuck shoving all the unwanteds into a corner of the map?
Yes, it is a very nasty trick!!! because when you deploy your units, they will destroy whatever the constructions in front, sometimes the evil long distance can bring all your troops under mortar zone, massive kills to all gunners.