I'm betting they won't go overly specific for what types of creature a striker is good against. If you want a character to deal extra damage to undead, give him radiant damage, but don't force him to go looking for undead and deamons to fight in order to fill his role. He may have one or two powers (a la turn undead) the specifically targets a type, but that (hopefully) will never be a main schtick.
I also hope for the inquisitor...and i hope they don't go stereo typical "Witch hunting/spanish inquisitor Lawful Evil in the name of Good" in the description. I think they should be field agents of the church...eyes and ears of the church and when needed, the fiery holy scalpel, (a nice counterpoint in millitary might to the paladin) but they should uphold ALL of their deities ideals. Paladins of Bahamut should be upright and just in their questionings, they want the truth. Once they have the truth, the gloves are off of course. An inquisitor of an evil god has free liscence to be as corrupt as he wants. I think a good term for their striker bonus damage would be 'censure'....
...but there is a new power for artificer in the character builder. It is an @will so I am assumeing it will lead to info o other builds...it is called Magic weapon...an extra bonus to hit basic attack fuiled by INT with ranged or melee weapons...
