Haven't tried 'c' yet, but does 'cannot sacrifice illusions for research' extend to bulbing Great People Illusions?
Also, I suspect the 'Lanun not settling' problem may be caused by the AI refusing to send out a settler without an escort, but not having any ships with transport capacity of 2 or more. What ships did you give them?
Finally, very odd AI behavior in my current 0.33b game. It's turn 600-something of an Epic game, Emperor, and every civ has reached T4 in at least one unit line. Top 3 are myself as Empy Flauros, AV Keelyn, and CoE Faeryl. FoL Dain and RoK Beeri aren't too far behind, though Beeri somehow failed to find any iron, and has pretty much been stuck with hordes of wood golems

. Anyways, on to the AI behaviour. I realize around turn 400 that I have yet to see Alazkan, nor have I seen a message about him. Naturally, I start looking for him with Hawks and Floating Eyes, since I want to steal his mirror. After about 20 turns of looking, I take a look at the tech trade window, though I disabled tech trading. Lo and behold, Faeryl had yet to research Tracking, let alone Poisons. By now, she has Knights, Mithril-wielding Champions, Shadowriders, and Crossbowmen, but not Assassins. Why in the world would the Svartalfar ignore the Recon line so entirely?
Oh, and of course the Luchiurp REALLY need to learn what to do with the Pieces of Barnaxus. I recovered his pieces from Keelyn, and after some convoluted maneuvering involving several Lunatics and chasing Stephanos halfway across the map and back, I finally got them to recapture the pieces and pick them up. Then watched in dismay as they were hauled around for 50 turns by various units, before being lost to the Svartalfar when the Stonewarden carrying them charged into battle against a fortified CG-3 Crossbowman. Is it not possible to tell the AI 'If a unit has the Pieces, move unit to nearest city, and cast Rebuild Barnaxus'?