Let's see. I think the idea here would be to pull down the Wizard to Tier 2, and boost up the Tier 3 mages. (Btw, I consider the Straywood a solid Tier 2 mage; it's just when trying to Swarm that he drops to Tier 3.) I'll set the ball rolling with some card ideas:
Dimensional Vortex (Conjuration)
Arcane 2, Mana 7
Insubstantial, Epic, Legendary
Armor /, Life 11
All Teleport spells and effects must target the Vortex's zone if possible.
Wizard Change:
Training: Trained in the Arcane school, and non-creature spells of an elemental school of his choice: Fire, Earth, Air, or Water. War spells and spells from the opposing elemental school cost triple during spellbook creation.
Dimensional Anchor (Equipment, Waist)
Arcane 1, Mana 4
The mage gains immunity to Teleport.
Priest: A bit more non-specific here, but a level 2 Holy creature suitable to become a Holy Avenger would do *wonders* for him. (Similar to the Straywood's Timber Wolf.) And/or a level 4 suitable creature.
Straywood: He really needs something to make swarm builds more viable; Etherian Lifetree was a nice step in the right direction, but nowhere near enough. Maybe defensive conjurations:
Scale and Hide (Conjuration)
Nature 2, Mana 7
Totem, Zone Exclusive
All animal creatures gain the Armour +1 trait.
Rajan's Mercy (Conjuration)
Nature 3, Mana 9
Totem, Zone Exclusive, Epic
All animal creatures gain the Aegis 1 trait.
Johktari: Not sure this one's fixable, except by making nonliving less appealing. Something like the blood-to-acid idea that had been bandied about in another thread might work. A quick-action ranged weapon is all well and good, but it would really also need to be one-handed (and maybe Cantrip) for me to believe it would truly make a difference for her. And there would probably be such a premium for all of that in terms of mana cost that it would prove prohibitively expensive to use, unless it's Johktari Only.
Some of the alternative teleports in the Name-That-Teleport thread would probably do wonders as well. I particularly like Shadow Step.
These are just off-the-cuff ideas, and at the least they would probably need adjusting for balance. If I come up with some other ones after some thought, I'll post them as well.