Here are some things I want to throw out there that I'd love to see the mage class get. Completely self biased, of course....
A. An AA, or something, to re-enable pet melee crits.
B. A bigger variety of pet equipable weapons, we get nothing passed L39.
C. Longer duration, or shorter reuse, Frenzy Burnout. It only doubles pet damage for like 60 sec and can only be activated once an hour. FB is useful on tougher single 1 group mobs but usually isnt helpful against multi pulls where it runs out before the CC'er can release all the mezz'd mobs.
D. Make Elemental forms have a slighted effect on GROUPED players. i.e. Fire form gives your group a DS effect stackable with the normal mage spell DS line, Air form gives the group a bonus to all resists and levi, Earth gives everyone a stm/hp bonus. Only one usable at a time of course.
E. Change Turn Summoned AA, which supposedly casts a "fear" spell (which all summoned creatures seem to be immune to because fear doesnt work) and a 1000ish dot (which likewise doesnt work) into a Harm Touch type skill that only works on a single target summoned creature or construct and has the same damage capability as a Shadow Knights Harm touch or a wizards Ultimate Blast. Mages already get a paladins lay on hands for their pet in the AA "mend pet" so might as well get the HT ability too.
F. It'd be cool to summon monst...oh wait....