Marty.McFly said:

If someone already knows this, or is actually capable of opening the vault and having a look at original drafts, notes and/or storyboards is Lucasfilm's Pablo Hidalgo ( twitter.com/infinata ). It wouldn't hurt to ask him via Twitter I suppose. If a bunch of people ask the same question, he might just take the time to research and give an answer if he doesn't know for sure already.

FWIW, I always thought that tower belonged to a regular SD, not the Executor.

Isn't there a making-of / behind-the-scenes feature that sheds some light on this?

Anyway, I still believe it's a regular SD conn tower. And no, I'm not pushing for a change in Revisited, it's just how I see it. :)