Thranduil - That makes a lot of sense. I love the bit about Sauron, and he and Elrond are fascinating.
(Painless!Thranduil deserves so many unthreatening nonsexual hugs)

Legolas - waah. Also all the hugs. Preferably Gimli and Thranduil hugs.

Dyslexic Legolas is an interesting idea. Probably easier, in some ways, in a society with more oral learning traditions? But an extra thing to worry about in Rivendell, representing Mirkwood.