When playing as Zeus, under Empty -> Other -> there is a tremendous amount of content you can place, from buildings to solar panels, to you-name-it. However, in both the 2D and the new 3D editor, the vast majority of this content is unavailable to be accessed. For instance:

In the 2D & 3D editors, the following items are available to be placed uner Units -> Empty -> Other -> Structures (Infrastructure)
Loudspeakers

In Zeus, the following items are available to be placed under Units -> Empty -> Other -> Structures (Infrastructure)
Communication Tower
Communication Tower (Anchor)
Diesel Powerplant Factory (Big)
Diesel Powerplant Factory (Small)
Diesel Powerplant Tank (Big)
Diesel Powerplant Tank (Small)
DPP Transformer
Lighthouse
Lighthouse (Small)
Loudspeakers
Power Generator
Radar
Radar (Small)
Solar Mirrors
Solar Mirros (Broken)
Solar Panel (12)
Solar Panel (16)
Solar Panel (16, Broken)
Solar Panel (3)
Solar Panel (6)
Solar Tower
Solar Transformer
Transmitter Box
Transmitter Pole
Transmitter Pole (Tall)
Transmitter Tower
Transmitter Tower (Tall)
Water Source
Wave Powerplant
Wave Powerplant (Broken)
Wind Turbine
Wind Turbine (Camo)

I am someone who likes to build my own custom bases and assault points for missions. I like to go into as much detail as possible, and the Eden 3D Editor looks to be absolutely perfect for someone like me. Please add in all of the items that are available for Zeus into the 3D editor so that we can build beautiful missions with all of Arma 3's content.