I like the way the plugin structure is setup in Maschine. Insert a plugin and next to it comes a + icon to add another. I really would wish something like that could be implemented for adding AUX bussen. No restriction to two busses. But assign AUX 1 and only then the second AUX appears as unassigned and so on. The way I work group 1-6 are mostly used for synths (both plugin and MIDI) and drum-groups. Group 7 gets loaded with 8 audio and sample plugins for what I want to add by recording external sources. And Group 8 is my FX group.
Another solution would be to simply being able to switch a group to 'FX Group', or 'Audio Group'. And that way lose the regular pattern setup in that group but have automatically 8 AUXes assigned to all mixer channels and 8 audio plugins inserted.
Would n't this be great?