Let them go first. Laugh if you seize the initiative back
There are many times if I set up second that I don't want to seize. Let your opponent move into your range but get fewer shots off.
As for the named characters, I like most of them. But at my LGS, we call the weekly gaming night, Patrol Night, so you usually need permission to field them. The games are usually under 1000 points per side and Dante, Imotekh or Eldrad aren't likely to go on patrol. The games are just quick skirmishes and a 200+ point character takes a big chunk out of an army. But when we organize larger games, everything is open. I'll still ask permission for Forge World and use other restrictions on myself in medium games, such as no Flyers if 1500 or less a side. Of course, I am one of the few with Flyers.
"Fetch me another plaything. This one seems to have broken." -Urien Rakarth
Space Marine- "This planet is ours, witch."
Eldar- "No ... This planet is theirs ..."