Soren mentioned changing the cd on holograms in future patches, but did not make any remarks on whether we would ever be able to choose what a hologram will be disguised as, or let us know before we place it what the hologram will be.
Drawing black market attacks to a hologrammed tile could be a strategy however. If you have a building that is losing money, instead of shutting it off, you could hologram it and use it as a lightning rod for other players to attack a useless tile. Imagine aluminum is $1, and its no longer worth the cost of power to extract it. You turn it off, and hologram it as an offworld market. Other players spam it with dynamites and mutinies, costing $5k+ and their black market cooldown, for a tile that was basically worthless anyway. While this is a cool concept, the limitations of knowing what a hologram will become/inability to choose, and the relatively high opportunity cost of getting a hologram makes this strategy impractical at best.
As for the bug you listed above, I have never witnessed any hologram just change, nor would that necessarily be a bad thing if it did. Players are expected to transition between goods and buildings, and having it change from time to time is at the very least an interesting feature.
