I still believe that a healer is not necessary for a caster duo/3-box.
A healer is for tank, because a tank can control aggro and sustain damage. A caster can do neither.
What you need is control, which the illusionist is excellent at. Just Bring some regeneration and Heat/Nox/Trauma potions for emergency.
Illusionist/wiz/wiz will be a wonderful 3-box. Don't treat them like they are three different characters. Treat it like an illusionist with 2 ice-comets. In most fights, use illusionist to control the mobs and call the shots. The two wizards only have to /assist illuionist, /cast 1 2 3. Mob dies, illusionist switches target, wizards assist again and nuke again. It's easy to contorl in fight. And since you are using pet to lead the first hit, mob will always hit pet first.
Based on my experience, For normal exp grinding, send pet, each mage casts 2 spells, mob dies. Dead mob won't aggro anyone and no one needs heal. Most blue heroic group will die in 10 sec when illu/wiz/wiz cast their 2 AEs simutaneously. You might get hit a couple times but not enough to kill any character. If it's a named, illusionist mez, hex doll debuff, double root, stun/stiff (which lasts 10+ sec at at L50), two wizards open the largest 3 nukes. Illusionist remezs, wait for stun/stiff/nuke to recycle. Rince and repeat. You will never run out of mana with this tactic. It doesn't matter this named is caster or melee, hit 1k or 10k, green or blue or while or orange, as long as your spells don't get resisted, you will kill it.
The only danger happens when you lose control of group mobs, e.g. mez get resisted or lots of adds. In this case, I bet a healer can't help you much either.
Message Edited by fy2006 on 10-24-2006 03:20 PM