He will pay!
 

I know I'm being too clingy, but that's the loyalty my nickname commands.

Anyway, elen silla lumen omentielvo for Lalaith, and damnation for Maedhros.

Little revenge is intact. So devise all possible scenario how Lalaith could get back at Maedhros. Humorous ones allowed.

I'm quite sure Lalaith will forgive Maedhros - after all, he didn't mean to cause the plague, and he never knew it would happen until it did. I think a scenario of Lalaith getting back at Morgoth is more appropriate. However, for the sake of humor, I'll make one up with Maedhros.
Ummm...he suffocated from Laughter. :D