That's pretty much how I'm doing it for Trailblazer.

(Bards progression is 2/3, FWIW.)

Hello Wulf,

I'd like to ask your opinion on the following idea for multiclassing and stacking of class features:

Multiclass character are eligible for all features available to all their classes.
Use specific class level for obtaining access to class specific features:
- class specific powers
- advancement of HD, saves, BAB, skill points, spell slots
- spells available

Use total character level for the purpose of calculating caster level with the following restrictions:
- classes with no spellcaster progression (example: Fighter) - add 1/2 HD/levels to caster level total
- classes with partial spellcaster progression (example: Ranger) - add 3/4 HD/levels to caster level total
- classes with full spellcaster progression (example: Sorcerer) - add all levels to caster level total

Total caster level does not determine spell availability.

Example:
- Cleric 5 / Wizard 5 - casts Dispel Magic as 10th level caster, cannot access spells beyond 5th level of either class.
- Fighter 5 / Wizard 5 - casts Dispel Magic as 7th level caster, access to spells as 5th level Wizard.
- Ranger 5 / Wizard 5 - casts Dispel Magic as 7th level caster, access to spells as Ranger 5 and Wizard 5 (yes, that means that Ranger 10 caster level is lower than that of this sample multiclass character - i.e. 5th)

Basically, the idea is to achieve balance by allowing level-dependent spellcaster features to get higher by stacking caster levels.

regards,
Ruemere