Maybe Wil's design could be used for the floor - But of course the smaller the image, the lower resolution it will be.
I've improved mine a bit - Gotta think about the text, maybe it'll be possible to make it go around the logo. Will release a grid soon for someone to copy from... Or I could do it (legitimately) when you're done with the frame of the building, as my contribution.
EDIT: BTW I just went onto the server for the first time in ages (Been busy with RL stuff) - Impressive work you've done so far for the Depot!