I'm not understanding the Mike Miller hate. The guy is basically a much better version of Weak Sauce and is always one of the smartest players on the court.
He is a top shooter (48% from three and 50% from the field last year), has an excellent mid-range game, runs the floor, is a great athlete, looks to set up his teammates first and he can handle point guard duties. Having Miller and LeBron on the floor at the same time would basically give us two point-forwards. Plus, Miller at the 2 would give us four starters 6'8" or taller.
Any team with Miller as its fourth or fifth option on offense would be a nightmare to defend.