Fire: A spell that is AoE, (thanks to my friends to told me how to use these terms..) but not DoT. Like Meteor Strike, but higher damage. Maybe a little side effect could be smokesceen.. Who knows, Kingsisle Entertainment is prob. working on this!
Ice: Ice need a decent damage spell (single target) with great damage but no side effect like Mammoth or Lord of Winter. Another possibility could be an AoE (again, decent damage, no side effect)
Storm: Diviners have been complaining lately about Storm Owl having no side effect. I can agree with that but at the same time no. High damage is Storm's speciality. I can be helpful in boss battles, but no so much in PvP. What I think they need is another single target attack with strong side effect, and a bit less damage than Storm Owl. Something like 1200-1400 damage and cleanse charm. AND THIS HAS TO BE DoT
Myth: Okay, lets all agree that Myth definitately needs an AoE! It might be a DoT AoE, that would be great. But I'm sure just a simple AoE will make them happy. No side effect needed with these Medusas, Basilisks and Calendars! Maybe they could also have a 2 hit AoE...!
Life: Many have been taking about a 'Mother Nature' spell, bit I dont know where you get the idea.. () The hit all enemies and heal all friends thing, I think this is like stealing Death's speciality... Converts (Damage and Heal) Funny how I dont have an idea for life, maybe another AoE which is DoT..!
Death: As stated above, it would be great if Death could get a Single Target hit , no DoT or Steal, a bit like Skeketal Pirate.
Balance: Balance vs Balance is VERY, VERY hard, this is why Balance needs a spell similar to Lernaean Hydra, found in the Therizinosaurus pet once at Epic and Mega levels. It would be interesting if this version could be DoT though...