Based on further chats around this proposed mechanic I've had the following tweaks suggested to me, and I like them but like anything here are up for discussion.
1) These missions to have an intro tip drop at the correct level range as a prequel, like Mortimer Kal's Wizard's Weakness. Doing that unlocks the contact avatar in whatever area they're located.
2) Contact avatars not to be a green glowing AE type but just to look like a generic NPC, and then to morph to the arc's actual contact when the mission is selected.
2) Contact avatars when in generic form to reel off exactly how to use this entire system in the first place!
4) Apply the 5 doors needed in the correct zone.
5) If you want to bypass the intro tip then the main arc to be available via the base computer like regular tips already are.
Variations on this: The initial tip to appear in the Police Scanner/Newspaper/Gold equivalent (Message Man/Clockwork).
Some discussion on the places I've suggested as avatar placement areas are that the Red and Blue versions are a bit out of the way. Studio 55 is pretty central to Gold though.
Again, we're just looking at leveraging existing assets. As I've said elsewhere, the actual arcs themselves are a whole other kettle of fish to discuss.
Thoughts?