Hi Dave,
Like Herb wrote already, getting the choir more upfront in a MIR Pro setup can be achieved by several approaches:
- making it louder (doh! ;-) ...)
- increasing the volume of the dry signal by means of the Icon's Dry/Wet balance
- using one of the Character Presets that emphasize the treble and / or upper mids (Air / Silver / Bite)
- moving the respective Icon closer towards the Main Microphone
Additionally you can always use processors like a dedicated EQ (MIR Pro comes with a mastering-grade EQ-plugin of its own!) or maybe even a compressor. It goes without saying that all of this depends a lot on the context and the arrangement.
*****
A sidenote: Looking at the screenshot in your initial message, it seems as you're hesitant to use the option to rotate an instrument on the stage to a different direction than 0° ... you miss a lot of MIR's unique sonic possibilities. The Directivity Profiles (which are one of the most important aspects of MIR's Instrument Profiles) will allow for - sometimes surprisingly different! - sounds coming from one and the same source (... you ARE using the dedicated Instrument Profiles for each Icon, aren't you?)
Just look at this screenshot of "Herb's Teldex Setup" to get the idea:
I also see that you're using different positions for the same groups of instrument using sordinos or mutes ... while this is a perfectly valid way to do it, I would put those Icons on the same spot and "Hide" the one I don't use at the moment.
In a nutshell, I wouldn't stick to a purely visual approach when building a MIR setup. Try different positions on a stage, try different stereo-width settings, try to rotate an instrument to make its sound "interesting" and "strong".
... there are some collected hints in MIR Pro's Preliminary Manual on p. 55 ff, called "Getting That Sound".
Kind regards,