Is the Independent Starport the only 1 special unused building that won't crash the game?????
None.
I was never able to place any unused unit in map, i wouldnt use them. Btw seems so.
None.
Let me show you how to hump without making love.
Not many of the Unused units can be used, but things like, as you mentioned, the Independent Starport can be used. I believe I have seen the Unused Command Center somewhere before. It may have been removed in recent patches, so don't be reliant on that. And I believe the second Unused Protoss Unit appears as well. Again, patch may have changed that.
Sorry I couldn't be of much help, but seeing a Help topic with 0 posts annoys me.
Someone posted a minute before me... [/sigh]
None.
Heard it was suppose to be an addon for barrack that never got to the beta stage.
None.