1) Actually, yes. You can import a *generalist* mage from BG1 and change him into any mage "kit" (conjurer, invoker, etc.), including the Wild Mage - I've done that myself.
2) - Wild Mage advantages: extra spell per level without opposition school, can cast the Chaos Shields and, most importantly, Nahal's Reckless Dweomer (NRD), which can be abused in many ways (see other posts on Nahal's).
- Disadvantages: 5% wild surge probability for any spell, and 100% for spells cast via NRD. It is more of a bother when you are low level, since your level is added to the wild surge effect roll. The higher the roll, the better.
Overall, I didn't like to play the kit much, because it made me think "Oh ye Gods, bless ye this spell and keepeth me from the evil dreaded reload button!" every time I cast a spell. Then again, I guess that's part of the charm.
