Input Channels have a very robust routing screen when you can see everything to which they contribute. The Mix bus routing screen only allows you to see what inputs contribute to it not where that bus is going, Mains, FX, Matrices, etc. Adding a tab in the mix bus routing screen would be so helpful especially if you sub group things like Sn top/Bot, Kick in/out and those sub groups end up functioning like a channel.
I’m posting in Avantis but this same thing would be equally game changing in the D-Live workflow as well! Let’s make it happen!