Second question: {legh} v {leghpu'}. In the story the only 

chance Poseidon will get to travel the oceans is in the far 

future, in a mythical End of Times. Although for the purposes 

of the story, it _is_ treated like a historical fact. So, my question 

is: can you use {leghpu'} if the event it's referring to (the event 

that brings the hypothetical into the historical) will happen far, 

far in the future? 

If I understand what you're saying, then yes. wa'vatlh nem 'aplo' poSmoHlu' the container will be opened in one hundred years; wa'vatlh nem 'aplo' poSmoHlu'pu' the container is opened in one hundred years. The latter refers to a completed action; the former is explicitly not a completed action.

-- 
SuStel
http://trimboli.name