I am wondering if there is any reason, other than instrument specific EQ or effects, NOT to use an ensemble that is a group of individual instruments already panned individually within Vienna Ensemble to MIR. In other words, starting with an ensemble in Vienna Ensemble that is composed of several instruments panned (with some exaggeration so that when shrunken down in MIR the pan will still be audible) and then routing all the signal together into a single placement in MIR that is somewhat larger in size than an individual instrument. I have been using only single instruments up till now, but was thinking of doing this ensemble approach to simplify setups, assuming it is not wrong from an audio/technical standpoint. I know that the larger instrument must be appropriate sounding for all of the inidividual ones within it. Such as using a cardioid mike for brass, or using the ensemble instrument type in MIR or whatever. Is this in fact why the "Woodwind Ensemble" and other ensemble MIR setups were created?
Also, I am having this situation repeatedly - there is no general percussion setup in MIR. But I often use the large orchestral percussion ensemble in Vienna Ensemble. So the question arises - what MIR setting should be used for this single instrument group? I believe I have noticed that there are problems with just arbitrarily selecting any percussion setting. The snare drum seems to be adversely affected by some of the percussion settings such as cymbals. So I have defaulted to using an omnidirectional setting for the percussion ensemble. Are there any specific directions for this situation other than simply breaking apart the percussion parts into different single instruments?