Thank you! Just wondering that in this way multiclassing to get an animal companion does not gives crunchy benefits.
Now I'm thinking about 4th edition style multiclassing; having a 2-5 level move for each class that anyone can take and that gives the basic signature moves of that class, somewhat tweaked if they end up being too powerful, and a 6-10 level move to improve the existing moves to be almost on par with the actual class.
Arcane Dabbler: you get spellbook, prepare spells and spellcasting as a wizard. Treat your wizard level for as half your actual level when preparing and casting spells.
Arcane Initiate: treat your wizard level as your actual level -1 when preparing and casting spells.
This is basically the way I've been running it. It just seemed a bit too powerful the other way.