For some time, I have been mulling over re-writing the 0e classes. I have narrowed my initial set of classes down to six, corresponding to the six attributes. My 0e class list consists of the following classes, and the related prime attributes. I am starting with three fighting classes, and three casting classes.
Fighting-man - Strength (includes Mercenaries, Valkyries and Soldiers)
Rogue - Dexterity (includes Catburglars, Swashbucklers, Pirates)
Barbarian - Constitution (includes Amazons, Gladiators, Berserkers)
Magic-User - Intelligence (includes Wizards, Magicians and Witches)
Cleric - Wisdom (includes Pigrims, Paladins and Druidesses)
Psionicist - Charisma (includes Oracles, Pyromancers and Hypnotists)
As I posted earlier, I am intending to tackle the Psionicist class first, simply because it deserves better treatment than it received in the 0e and 1e materials.