Solution: just errata away the prerequisites, then the elemental damage feats will survive. Because there's *bleep* all else for casters to take in the way of feats...And yes, the FAQ ruling does make all those +1 element/condition feats pretty useless, especially since they can't stack. Sadly, those will likely go the way of the dodo pretty soon
Ohhhh - you know, I bet you're right?I think WOTC views the different magic damage types i.e. fire, cold, necrotic etc as being analogis to weapons groups. Thus we have the different feats that add damage to the different magic damages and the weapon focus feats that add damage to a weapon type groups.
Some of the suggestions on how to fix elemental boosts should probably keep that in mind, too: elemental-based damage boosts are far inferior to weapon-based ones.
Though that can be mitigated somewhat by concentrating on one elemental damage type, then using an item that allows you to swap the damage type.