As long as youre comfortable with having a deaf mute elf in your company
Perky Ent 
. As for communicating with others of the party, I thought that since he has accompanied Elrond's twin sons's on many scouting expeditions, and Rivendel being such a small place an all, that some of the other elves could understand his mute language and translate it to the rangers.
What say you, and the players of the other elves? Is this allright with everyone?
EDIT: Pio, the colour of Eldín's eyes has been changed to grey.
Edit: Thanks!

~*~ Pio