big +1 for this.
In my case I use the CQ-20B as part of an IEM splits rack. There are 6 of us in the band and unfortunately 1 member can’t be on them due to the mixers limitations. Obviously all 6 outputs are being used, but because FX are post fader it means I can’t even have him use one of the L/R outputs as those main faders need to be essentially set for the FX sends, which we want to hear in the in-ears. Alternatively he could use one of the Alt outputs but he’d have to share a mix which isn’t ideal.
We knew this would be the case when we purchased it but went with the CQ-20 over other options as overall we preferred what it had to offer. He’s had to stay on a wedge, but now that we’re all on IEMs he isn’t getting as much sound on stage making it more difficult for him ironically, especially on larger festival main stages.
I guess another feature that would help us work around this is if the alt outputs could be additional standalone mix outputs, taking the total to 8. Or better still, both of those features 😀