Maybe Enclave Cryptologist for cheap, repeatable drawing. Merrow Harbinger can tutor for you; raises the curve a bit, but finds lord of atlantis. If you play against alot of Fetchlands or tutors, Cosi's Trickster is good. Scroll Thief can net you alot of cards. Seasinger can steal creatures. Aquitect's will is similar to sea's claim for islandwalking, exchanging disruption for a card draw. You have a good creature base for pinging early, but you definitely need more control to get your lords working- Mana Leak, Essence Scatter, Unsummon, Boomerang, Into the Roil, Negate, etc. Good overall.
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Cauldron Haze
How about grafted wargear instead of trusty machete? make your roc eggs a target, pump the aerie. Riftwatcher doesn't seem that great. You shouldn't count on the 4 life changing anything. Animal Boneyard can let you do the same thing with any creature. Cloudchaser Kestrel is a definite sideboard. How about shared triumph, glorious anthem, Honor of the pure... Also, I've playtested Emeria for bird tribal, and its not consistent. You would be better off using one more battle screech and 2 cataclysms. Cataclysm can tip the scales and super boost your soulcatcher. They won't be able to recover with one mana and only one creature .