Should we keep the option to have multiple model instances in one simulator instance?

[JortGroen]

Mosaik works in a way that one simulator can have multiple models of the same type.
This was also the case in Illuminator V2.
However, the current setup of Illuminator V3 always creates a unique simulator for every model.
We are therefore currently moving away from allowing models per simulator. For example, we now store parameters in the simulator instance.

Should we however keep the option open for the future?