1. The word of those who made their promises to help him find Nimrodel.
2. Also, Ędegard's oath. That will drive the story too.
3. Characterization - after the manner of fantasy would be cool - see
this thread if you want to know what I mean. For example, how do various characters mirror others? We've already set up some interesting pairings: Ravion and Mellonin; Aeron and Gwyllion (still works with her ghost); Aeron and Ravion; Liornung and Leafa; Ędegard and Leafa; Bellyn and Nethwador; Nethwador and Amroth; Erebemlin and Taitheneb. Mellondu and Mellonin. Mellondu and Ravion! Just to name a few. What are the primary "types", if you will, of each character? I'll take a stab, and correct me as you wish:
Raefindan: noble foreigner
Aeron: irascible youth
Ędegard: traditional Rohirrim
Leafa: tentative sweetheart
Liornung: lighthearted minstrel
Ravion: flawed leader
Erundil: wise counsellor
Amroth: resolute hero
Erebemlin: distant but loyal Elf-lord
Taitheneb: approachable Elf
Mellonin: passionate sister
Mellondu: protective brother
Bellyn: thoughtful friend
Nethwador: intense youth
Who did I miss? How might these various characters reveal/mirror others?
4. New people? We don't have to, but that notion is what brought Marigold into being.
5. For the Elves, trying to unsubmerge Amroth - and Mellondu's resistance?