I am Raygoza and keep contact with mod developers of mods I like, I like to help my offering suggestion and ideas. When it comes to modding I am not good at it, I am only able to change a few things in StarCraft and Homeworld 2.
I worked on this for three hours to make a supply depot as small as an addon when it comes to graphics, I find it be very impressing.
'additional supply depots required'
Nice work man!
About those parts looking like tubes above the big fan were actually made by mistake, when you edit stuff with this low resolution you really have to zoom out to get the picture.
The hard thing to accomplis was making it small, since in the image it's actually leaning towards you a bit and that made it very hard to edit.
Now when the base design is made all that has to be done is adding the animations (same image with only the next frames of the moving parts from the normal Supply depot.
Unfortunately I do not work with Graphics, just saying that it would be easy for someone who knows to get it looking properly in game.