Mistwell
Crusty Old Meatwad
As far as I can tell, PRCs were meant to be roleplaying tools more than anything else. It was a way of introducing an organization into a game.
While it might be a house rule, I have never seen a DM who didn't limit their players to one, and only one, PRC for their character. So this idea of taking multiple PRCs just to get some powergaming benefits out of the lower level powers and abilities of those PRCs is something I've never seen done (though I am sure there are DMs out there that let it happen).
There is always an entry cost to every PRC. If you think the +1 spellcasting is too powerful, make the entry requirements higher in your game (though I think most entry requirements really are worse than most people seem to think they are already).
While it might be a house rule, I have never seen a DM who didn't limit their players to one, and only one, PRC for their character. So this idea of taking multiple PRCs just to get some powergaming benefits out of the lower level powers and abilities of those PRCs is something I've never seen done (though I am sure there are DMs out there that let it happen).
There is always an entry cost to every PRC. If you think the +1 spellcasting is too powerful, make the entry requirements higher in your game (though I think most entry requirements really are worse than most people seem to think they are already).