Sub-Grouping Grouped Audio Clips & Labelling Groups

In my workflow, I prefer to keep any cut or individual part unmerged with adjacent clips to maximize editing capability, but this makes it hard to move things around when I'm storyboarding my audio into a podcast format. So I use groups to keep sections of conversation together. But even this creates a lot of different groups that are hardly visually different from one another. I want the ability to quickly distinguish these clips both visually and by sub-grouping.

Here's the idea. Once I've edited a piece I don't need to look at the waveforms anymore, so let me overlay them with a text label which auto-contrasts the colour of the selected clip. Preferably this will allow emojis and PNGs to be inserted too so that I can further distinguish with symbols as well as name labels.

I also want to then put groups of groups together under sub-headings of groups. This would let me build a podcast with audio clips grouped by sentence, topic, speaker, and conversation. Preferably this would let me link groups to multiple heading groups so I can filter through labelled groups for organizational purposes.