I have some speculation as far as Morgan's fear mongering: perhaps they are trying to draw us into an unequal alliance with them? Or perhaps they are trying to get us paranoid about the Gaians and Data Angels so that the Morgans get left to themselves?
As for giving up map data to the Morganites: NO WAY!!!!! They probably just want that so they can infiltrate us.
As for game-wide overall strategy, I originally advocated allying with the Gaians. Now I'm not so sure. The diplomacy has been rather shaky.
What if we just pursue a general isolationist policy? If we aren't allied with anyone, we'll seem less threatening. Perhaps the other three will be too busy with trilateral intrigue to worry about us. Meanwhile, we feast on the Zak and Lal continents.