At some point, we have to admit we're asking too much from our tools.

I know nothing about your context, but in what context would a single model need to support so many permutations of a data structure? Just because software can, doesn't mean it should.

Anything multi-tenant? There's a reason Salesforce is used for so many large organisations. The multi-nesting lets you account for all the descrepancies that come with scale.

Just tracking payments through multiple tax regions will explode the places where things need to be tweaked.