Fate of the Elves

I've been thinking about the Three Rings of the Elves and their place in the grand scheme of things and how their fate is a 'Catch-22'. I am worried about how PJ will convey their..er..predicament. I fear it will be somewhat skimmed over due to lack of time. I think he should explain how the Elves endure age after age, how hard it must be for Legolas knowing his fate, not just see him drift over the Sea. I will leave, I will leave the woods that bore me; For our days are ending and our years failing. I will pass the wide waters lonely sailing. Long are the waves on the Last Shore falling, Sweet are the voices in the Lost Isle calling, In Eressea, in Elvenhome that no man can discover, Where the leaves fall not: land of my people for ever! Any thoughts about this? Any spoilers?