I have a suspicion, bear in mind I don't have anything to back this up but its an expectation, that the GoF will probably be off limits for Foundry use. The Guardian has been a legal sore spot for CBS for years and I have a feeling that to avoid anymore headaches it just won't be made available to us. I of course would love to be proven wrong, but I think you will find your ad unanswered But if you do get the asset, can I have Space Lincoln? I don't have a story for him yet...but hes canon!
Single Foundry Author seeks Guardian of Forever to join him in a quest on a planet in the Gateway system.
Single Foundry Author likes Phasers, talking in metaphoric statements and time travel. Dislikes not enough art assets and important set pieces missing from foundry.
It's probably never going to be available for us. It barely made it into the real game mission. Apparently, the Guardian "character" is an intellectual property owned by someone else, not by CBS, so they have to pay or get permission every time they use it.
I'm sure if you contact the owner of the Guardian and pay them tons of cash they will license it out for your foundry mission :p
Harlan Ellison to be precise. IF you look into the 'lore' the fight between him and Star Trek is a legendary affair. They were/are in litigation pretty much since the 60's regarding aspects of the whole thing. As I said its a legal minefield and likely to remain more offlimits then Talos IV. In fact it might just be safer to deal with the Talosians
what's really cool about it is you can make it cycle through different sets. Putting the time portal (with a bright sky) closes it, and all the set can cycle with triggers and timers. So, you can look through the portal, see Cardassia, see portal go generic and then reopen to show Vulcan.
If you want, you could even have the player step through and the whole thing can disappear.