Weak coupling with cfpdes

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Hi,
right now we can define multiple physics in cfpdes. The coupling is strong in the sense that we solve the corresponding system contains all the unknowns from the different physics. Would it be possible to add some options to enable each physic to be solved separately and to ensure the coupling by exchanging some fields between the physics?

As a user case, we can think of what is done in HiFiMagnet. We first solve a thermo-electrical problem; it provides the current density as a result of the thermo-electric problem as the rhs for the magnetostatic model. For transient simulations, it would involve some synchronization strategy between the time steps for thermo-electric and maxwell.

This feature would be great to tackle large 3D coupled problems. It will somehow reduce the computational resource required to run such simulations.