I heard a rumor IRL that there may be different class/level stats for the 3 different "pillars". The Combat class/level will be separate, "silo'ed" from the Exploration and Roleplaying class/level. A king could have a level 10 Roleplaying class but could still be only a 2nd level fighter. (One...
Would it help if a wizard/sorcerer 5/5 is the same character level as a wizard 7 or a sorcerer 7? if it is as difficult(or just slightly less) for a 5th level wizard to become 7th level as it is for a 5th level wizard to become a wizard/sorcerer 5/5?
or in order to get that first rogue level...
Or the classes could "gestalt" instead of "stack", keeping the accuracy bounded to that of the best class(es), which would be necessarily less than or equal to a single-class character of that character level. Instead of a higher number, they'd get more options.
Instead of the table
How about - at every character level, for each class you have, you can increase that class by a level or add a new class at the old class level -2. So a 10TH level fighter can go to either F11 or F10C8 at character level 11. At 12th character level she(F10C8) can go to...
The choice may be how to deal with the evil empire. A railroad would be having no option but to attempt to sneak into the palace and assasinate the Imperatrix in her sleep.