Ady I ve noticed some variance that might be interesting.

Impfighter i want your put here if you want :)

In the first image (i brighten it up in purpose) you can see before the holo appeared a different pattern on the wall.. That have two rentagle holes.

I tried think what would be more easy. adding a similar pylon like the rest of the others to that spot or make the back walls like they should be?

Assuming that not only one pylon with that pattern would be present thats why i ve made 2. Maybe im wrong and its only one.

Fancy that this room is full of surprises and variations

For the more radical ones the double rentagles might be the emitters of the holograms :P ;)

-Angel