Archers are indeed support, warriors in the current state need the CC spells of mages and archers to close in or chase down a target.
Alsius does this pretty well too, I often get winter stroken, ivyed, ambushed etc... several times per fight. I remember getting about 50 winter strokes off Enio when we were fighting around PP once, including one with me right in his face half way though beast attack
Ranged class need to remember that barbs are the most powerfull damage dealers around, and if you see a player running from one then a CC spell will be 10* more effective than a damage only spell like Lightning or Serpants.
With more warriors about I would hope this is just how play styles will naturally develop but since warrior population has been low for so long many archers/mags are used to playing the 'kill' roll rather than CC and support.