1. Ok... I'm gonna bring it up again: the tears of edgli.
I think they are the body of Endowment. Just as the bodies of shards (lerasium and atium) are the ultimate weapons of allomancers, the tears of edgli provide the greatest colour, and thus best fuel, for the awakeners.
2. The Dor and the pool are opposing shards. The dor is the the one that left (it's conciousness anyway). I think the earthquake might have been caused bythe shard leaving (or being banished?). We already have a link (although a tenuous (sp?) one) between earthquakes and shards with ruin. Perhaps there is osme truth to the Jaddeth myth, but in reality, he and domi are jsut representations of God.
I should point out AonDor and Dor are different things. Dor is a force (or shard). aonDor is a magic system or interpretation of Dor's power (like allomancy is of prevervation) as is the Fjordell monks and Clay-shan (sp?).
3. I don't think Hoid is one of the shards brandon is talking about. The only evidence we have of him being a shard in the published works is his world hopping abilities. I posted in the hoid topic that I think Hoid may be the conciousness that has split off from the shards, mirroring what happened, on a smaller scale, to preservation.