Look what they did for Gimli though! He's pretty tall and ...
Hey! Tall! Ooookay, now I like Ulath (hee hee U-lat) and he needs to be played an actor who is very tall. What about
Rhys Ifans? I'll admit he's got the height, and I can see him looking a bit Nordic-ish, though .... well, just not really super handsome.
Anyways John Rhys-Davies is just over six foot and they got him to look pretty short. I'm sure they could get Bill Nighy to look tall. But I really like the idea of him playing Zalasta. That's a much better role for him than Vanion.
What about
Jeremy Northam for Tynian?