How to manage Matrix switch

Dear VMS experts,

I have one questions about matrix. I'm implemeting a core model that will foresee a very big big Matrix. Since in the future more additional countries will be added in our scenario, how is it possible to mantain a matrix like this?

For example, the action Z123 Omologation will be managed in way 1 for Italy and way 2 for Spain. Do you suggest to manage a sort of swith to other matrix (that cointaines only some specific features for each company) or another technicality?

The request is to not create one big matrix for each company, but one core model matrix.

Thanks

Elena