I don't think I'm adding anything new here, but to me a thought is a representation of something, and the notes/attachments/thought icons are details for whatever it's representing. When that thought is the active thought, I use the related thoughts as the context for the representation. Over a long period of time I moved away from pure hierarchic arrangements and now I link based on context and my needs when viewing that thought.
For example: A Meeting - Notes are Detail Book - Parent is the author and a second parent for genre, cover is the icon, hyperlink to GoodReads and then review in the notes. Day - Date is the name, notes on what I did for the day in the notes Movie - Parent is the Genre, link to IMDB page, review in the notes, poster is the icon. Article - Title is the name, URL is the attachment, notes are my thoughts on it I don't generally have long thought names, I find short succinct names are more useful for: I also adjust Thought Names purely to refine search results. Additionaly, starting in TheBrain 9 the thought label is also searched in the quick search, so I usually add different search terms or key phrases in the label to further assist searching. Viewing in the plex (especially when the plex is busy) Seeing in search results (my primary mode of navigating to areas of TheBrain). Finally, don't underestimate the power of Thought Icons. We aren't just restricted to the ones provided. You can attach a screen grab, any image, or it will automatically use the first attached image as the icon. Your imagination is the limit here, but a picture is worth a thousand words. Another tip: If you do have an area with long thought names, use Outline view.