None of the classes are actually good, they all need skills from other classes to be viable in the mid game. Skill tomes, librarians, and such are the most important treasures you can find.
Giving the dealer a 3 per turn limit on hit, would prevent the infinite draw bug. It would also allow for the creations of a "Five Card Charlie" ability on the dealers dashboard to add even more verisimilitude to its blackjack theme. Or just change its attack to 10-17 or any five cards to activate.