I feel since the artificer is taking the first presidence on upping bonuses to crafting skills, that other spell casting classes should get the opportunity, since based on the way the crafting system is constucted, it would be possible.
Unlike the artificer which gives a bonus across the board the other classes since they are not as craft heavy get the same bonus but only in one crafting catagorey.
Bard/Sorcerer/Wizard - Arcane
Paladin/Cleric/Favored Soul - Divine
Ranger/Druid(Coming Soon)/Spirit Shaman(maybe) - Elemental
At least it's a thought for more class balance.
And for those others out there, Fighters and Monks, we shall see what other forms of crafting come your way. Rogues already have trapmaking, weither or not they get a skill for it later or not. Dunno.
TiranBlade, TK