Been looking through the Archetypes and seeing a few that would be great combos. The obvious limitation is that no 2 archetypes can change the same class feature of its parent class. But, I have not found a rule anywhere that stats you can not take a parent class twice.
Here are are my thoughts an how this could work. Please let me know if this would work, and any helpful suggestions.
()= archetype
ECL= Equivalent Character Level
Example1: Fighter (cad)2/Fighter (Free hand Fighter)1
This would of course become complicated in the case of wizards as they have the ability to specialize in a school of casting. My simple answer for this in to let the negatives stack for opposed schools. The wizard could not however, take the same specialization for its individual wizard levels due to duplicate school abilities.
[]= specialization
()= archetype
ECL= Equivalent Character Level
Thus a Wizard[evoker](any)1/Wizard[evoker](any) 1,ECL2 could not be a class combination despite any archetype combination.
As for Sorcerers and their Blood lines, This would replace the Crossblooded archetype, as each blood line would level separately.
{blood Line}
Sorcerer{Draconic}/Sorcerer{Abyssal}
These Bloodlines would be very character storyline related, and would have to be carefully tailored to the campaign in question.
Clerics/Paladins/Inquisitors/Oracles combinations` would be pretty much limitless and allow for polytheistic builds, ( 1 or more gods) Limitations would be corresponding alignments as most divine followers only work for those they have a connection, or shared values with. Patron Gods would have to share one alignment of the PC and Each other. However you would end up with 4 or more domains
<> god
()= archetype
ECL= Equivalent Character Level
CG Cleric()<Cayden Cailean>4/cleric()<Gorum>2
In all cases of Spell casting you would make up separate lists, just like regular multi-classing.