Hey, if you guys want two druids, then go with two druids. I am capable of accomodating nearly any kind of party mix.
Now, the ice para-genasi you tend to see mostly in the north, particularly around Ice Lake. They tend to be level-headed, and calm to the point of being numb, though some have rather sharp edges around them. While most dislike the heat, they take no adverse effects from it. Most tend to follow Auril, the Lady of Winter, who delights in laying cold and snow on the land. "Winter is the crucible in which strength is formed," is one of the tenets of her faith.
Some of their physical features are white or even ice-shiny skin, blue, white, or ice-caked hair, breath that is always visible, ice-blue eyes, and skin that is always cold to the touch.
The Positai are usually seen in Andeluvay, as the only way to get a Positai child is for the child to be conceived and born in the Plane of Positive energy. As the capital is the one place where there are the majority of the planar portals, this is where Positai tend to be. They tend to have glowing skin and hair, golden eyes, are always warm to the touch, and seem to possess boundless energy.
They are often easily distracted because of the energy that fills them, but despite this, you see a great deal of them in the service of various good faiths. Pelor and Heironeous specifically, but you can find them as healers in almost any good faith. There are few that deny their healing nature. Those that go for the more martial aspects of the faiths tend to be those that hunt undead.
Negatai are generally seen in Andeluvay, but you can also find many farther abroad in Low'verok, such as near or in Albon, the large trade city. They are born in the same manner as Positai; they must be conceived and born on the Plane of Negative Energy, a very difficult prospect.
Negatai are generally entirely jet black, from their skin, to their eyes, to their hair. Though they can be sickly, they are also strong. You tend to see a lot of Negatai in the Gravecrawler's Guild (morticians and undead reanimators), where most are employed as necromancers that animate those condemed to die and then be reanimated as undead to serve out their years of menial labor.
Most do not think well of Negatai, they see them as being only a short step from being inherantly evil. However, Negatai are aware of this, and many strive against their inherant nature of death.