Ashanderai
Explorer
Regarding how to fight incorporeal creatures: I will bet that it has something to do with the skill stunts that were mentioned. I have worked up a class that defeats incorporeal creatures and possessing entities using skills and class abilities, sometimes without even resorting to combat. I am sure that Mike Mearls has done something along a similar vein, but made it something that all IL characters can handle doing.
Regarding the combining of IL character classes and other character classes in the same campaign: I would justify the difference in these classes as coming down to DNA, like a mystical or nonmystical bloodline or heretage of somesort. PCs with the standard classes will be descendents of an ancient bloodline that only occasionally crops up in the population of the setting. This bloodline allows them to use magic items and maybe even cast spells; however, an individuals "strength" in this bloodline varies considerably from individual to individual. One might be able to use magic items, but never cast spells, one might allow them to do both; that would be your standard classes.
Your IL classes (those without this bloodline) couldn't use magic items like those with the bloodline (and thus not having a standard class). The bloodline might be erratic and skip several generations at a time. It's origins could lie in the events of an ancient, magical cataclysm (causing the current era of the campaign to be less magical, but allowing for the discovery of magical weapons in ancient ruins) or be due to characters with the bloodline to be the descendents of an ancient deity that came to the mortal realm to have fun or generally slum it with mortals (Son of Zeus anyone?).
As to the multiclassing of these disparate classes I would say that comes back to the "strength of the bloodline and perhaps even the ability to learn how to harness that bloodlines abilities over time (kind of like in Wheel of Time with those who can channel). An IL character who takes levels in a standard class is simply learning to access that bloodline at the expense of some other abilities. An arcanist is simply somone without the bloodline (or hasn't learned to tap it's abilities yet) who is learning to force magic to his will in a less finessable (sp?) way than someone who has learned to use his bloodline abilities with spellcasting (and has levels in a standard spellcasting class).
The use of magic weapons/items for a mutliclass character would be ruled by the limits recommended above. No one may use a magic weapon/item with a GP value of more than what is recommended for the total number of standard class levels in the DMG. This also represents the relative "strength" of one's bloodline; or at least the amount of the bloodline the character was able to tap into.
Regarding the combining of IL character classes and other character classes in the same campaign: I would justify the difference in these classes as coming down to DNA, like a mystical or nonmystical bloodline or heretage of somesort. PCs with the standard classes will be descendents of an ancient bloodline that only occasionally crops up in the population of the setting. This bloodline allows them to use magic items and maybe even cast spells; however, an individuals "strength" in this bloodline varies considerably from individual to individual. One might be able to use magic items, but never cast spells, one might allow them to do both; that would be your standard classes.
Your IL classes (those without this bloodline) couldn't use magic items like those with the bloodline (and thus not having a standard class). The bloodline might be erratic and skip several generations at a time. It's origins could lie in the events of an ancient, magical cataclysm (causing the current era of the campaign to be less magical, but allowing for the discovery of magical weapons in ancient ruins) or be due to characters with the bloodline to be the descendents of an ancient deity that came to the mortal realm to have fun or generally slum it with mortals (Son of Zeus anyone?).
As to the multiclassing of these disparate classes I would say that comes back to the "strength of the bloodline and perhaps even the ability to learn how to harness that bloodlines abilities over time (kind of like in Wheel of Time with those who can channel). An IL character who takes levels in a standard class is simply learning to access that bloodline at the expense of some other abilities. An arcanist is simply somone without the bloodline (or hasn't learned to tap it's abilities yet) who is learning to force magic to his will in a less finessable (sp?) way than someone who has learned to use his bloodline abilities with spellcasting (and has levels in a standard spellcasting class).
The use of magic weapons/items for a mutliclass character would be ruled by the limits recommended above. No one may use a magic weapon/item with a GP value of more than what is recommended for the total number of standard class levels in the DMG. This also represents the relative "strength" of one's bloodline; or at least the amount of the bloodline the character was able to tap into.



