Do you think there are any more aspects or classes beyond the 12/14 we know?

Classes, it is possible, although not necessarily likely. But they’re easier to come up with. Aspects, not really that clear cute, since they seem to be tied to what makes up Paradox Space, the very Fabric of Reality, you cannot quite reduce Reality much more than the 12 Aspects, everything has a link to one or more of the Aspects.