Placing the instruments and voices of a mix into a consistent space does not preclude us from adding additional reverbs to specific parts and tracks. This is particularly true when a reverb is being used as enhancement rather than for simulation purposes.
For example, you may wish to add some spring reverb to a guitar track to help emulate a classic guitar amp sound. That reverb becomes an intrinsic component of the guitar performance, and would be present if performed in a live venue, and so it absolutely makes sense to also include it in the overall room reverb.
It is also
