I smell a thread split coming down the pike, but we'll take it as it comes. I've managed to help "canonize" for lack of a better term some moderately out-there stuff in my own RP community so I have at least a little bit of experience with this sort of thing.
Typically, my approach is to look at all instances of game lore and see if it matches up - to use your example of necromancer, we have a few things going for the idea. For one, undead are definite, real things in the setting (though most of them seem to be incidental and not purposely created). We have the Fomor/Shadows/etc who seem to be at least moderately more 'rational' undead, some of which were unwittingly created in the cataclysm that sheared Tavnazia from the Quon continent. The pirates of Norg tend to call the dead in their attacks on ships at sea. The Lamiae make undead servitors of varying types. There is a necromancer living in the Phomiuna Aqueducts who, IIRC, attempted to imbue a mannequin with the soul of his dead wife in an obscure line of quests. And last but not least, in the Dancer history writeup, it is revealed that plague victim corpses were animated by necromantic magic and caused to dance during the Bastokan Blight in a procession known as the Totentanz.
Taken all together, it looks like necromancy holds water. If someone wanted to make a necromancer char, I'd definitely be wary and want to know how they planned to put it all together and make it work, but so long as they didn't stray too far from the points listed above and it all fit, it does seem feasible. To be honest I'd sort of rather they simply stuck with more regular occupations, but if they were really set on it, I couldn't in good conscience tell them no. Now, if they want to go raising armies of the dead to besiege Jeuno... We're going to have to have a talk about this. In the end it's not just feasibility but how gracefully the player carries the concept.
I add the disclaimer that this is simply how Canta Per Me has traditionally handled things, and that practices & standards will vary from group to group.
Typically, my approach is to look at all instances of game lore and see if it matches up - to use your example of necromancer, we have a few things going for the idea. For one, undead are definite, real things in the setting (though most of them seem to be incidental and not purposely created). We have the Fomor/Shadows/etc who seem to be at least moderately more 'rational' undead, some of which were unwittingly created in the cataclysm that sheared Tavnazia from the Quon continent. The pirates of Norg tend to call the dead in their attacks on ships at sea. The Lamiae make undead servitors of varying types. There is a necromancer living in the Phomiuna Aqueducts who, IIRC, attempted to imbue a mannequin with the soul of his dead wife in an obscure line of quests. And last but not least, in the Dancer history writeup, it is revealed that plague victim corpses were animated by necromantic magic and caused to dance during the Bastokan Blight in a procession known as the Totentanz.
Taken all together, it looks like necromancy holds water. If someone wanted to make a necromancer char, I'd definitely be wary and want to know how they planned to put it all together and make it work, but so long as they didn't stray too far from the points listed above and it all fit, it does seem feasible. To be honest I'd sort of rather they simply stuck with more regular occupations, but if they were really set on it, I couldn't in good conscience tell them no. Now, if they want to go raising armies of the dead to besiege Jeuno... We're going to have to have a talk about this. In the end it's not just feasibility but how gracefully the player carries the concept.
I add the disclaimer that this is simply how Canta Per Me has traditionally handled things, and that practices & standards will vary from group to group.