I think that Rangers are a great complement.
For once they do not need special debuffs on enemies or certain ground conditions to utilize most of their CC unlike Wizards. Their standard attacks can be reduced to 2 and 4 AP per use respectively giving them a good attack frequency. Thanks to their range and escape skill they do not have to waste many AP on movement usually.
Damage output depends on their weapon, dexterity and chosen arrows/skills.
