Maybe later on. Right now, the Devs are (or at least should be) focusing on getting the game playable by everyone and making sure there is enough content for players to sink their time into.

You sound like a player who wants a magic based game
An overpowered magic game at that
They will add more weapons, but I doubt they'll add "uber pwning burn zap spells"
The spiral knights use equipment, all equipment runs off of heat
The most magic like equip in game in my opinion is the wrench wand because you can zap a bolt
Or the sealed sword line because of their charges as well
Magic can ruin a game, and Spiral Knights is fun without it

Actually I think that guns, bombs and pickups provide most effects that spells provide in other MMO.

With guns knight is not only able to deal damage from a distance but also can set foes on fire, freeze them and such.

Bombs work like AoE spells but if you really need something that can be toss go for vials - they work pretty much like AoE spells too and can be tossed.

Mecha Knight Kit works like summoning spell.

If you want to play healer role buy max number (6) of health capsules from Hector, the capsule merchant, before expedition and then revive fallen comrades on the way or drop one of your capsules so a heavily injured friend could pick it up.

I think there are so many possibilities so far that magic is not needed.

Of course, there could be new pickups introduced - like Medbot Kit (create very vulnerable healing scuttlebot, who follows knights - definitely a T3 pickup) or Witch Doctor Bag (create zombie who follows knights and attack their foes, and perhaps revives when killed nearby a grim totem).

There could also be new possibilities of status usage. So far cunning and knowledgeable knight can adjust some monsters' qualities by applying certain status on them - like melting Ice Cubes with fire status and such. Maybe some status based interaction with environment could be introduced in future.