In the realms of color art, I still wouldn't miss Crabapple.
I miss his absence.
Also there are 5 energy types (force in theory not being an energy type, negative/positive could be tho) and 4 traditional elements, and there is no obvious association. I would myself prefer to see Air with Sonic, and perhaps Water with Acid (although I would even like better if Acid was not part of the game at all, it just strikes me at somewhat anacronistic!), but I can't figure out what Earth could be
Me, personally, I have simplified things a bit, element is a synonym of energy, and there are 13 energies.
- Air
- Cold
- Corrosion (often called Acid, but this is a misnomer, as bases are elements of corrosion too)
- Darkness
- Earth
- Electricity
- Entropy (Negative Energy)
- Fire
- Force
- Light
- Sound
- Vitality (positive energy)
- Water
It is theorized, by firm believed of the Rules of Fours, that there are three other energies, undiscovered to this day, because they are subtler, more ephemeral. Proposed energies include sentience (mental energy, the spiritual equivalent of positive energy, the energy manipulated by psionicists in their psychic magic), belief, emotions... Other claim the primordial alignments (order, chaos, balance) should be added. Still other claims that the elements of wood, flesh and void should be considered. And you have people thinking that the feminine and masculine principle deserve this honor. Bleak figures claim the three other elements are curse, disease, and poison. It's all very blurry past the thirteen acknowledged elements.
Anyway, to cut the IMC fluff stuff, I've found that considering energies and elements to be the same thing solves problem. Of course, you need to accept you're going to have "air damage" (caused by wind and pressure), water damage (pressure again), earth damage (crushing, pelting, etc.)...
For those who wonder what "light damage" could be, I refer you to the Lantern Archon's attack.
Light Ray (Ex): A lantern archon’s light rays have a range of 30 feet. This attack overcomes damage reduction of any type.
Of course it does, since it's an energy -- energy aren't affected by damage reduction.