Hi Adriano
Thank you for asking! 
Auto-suggestion would be useful: one of the things I see that what I do, is to make almost-identical tags as I type. I might be writing about interpretive practices, and write # intprac and on another occasion write # interprac . Perhaps that’s me just not having good enough practices myself, but when I am in that deep flow of writing, I want to just be able to tag my content when I have that epiphany of “oh - this connects to this! let me tag it for later review”. With auto-suggestion that would become more consistent for sure.
The reason for wanting a list or preferably a cloud of tags is as an aid to the writing project and process on a larger scale. Gingko is great for dealing with large amounts of info - I love the drag and drop cards process. My dissertation is evolving much more organically this way. But sometimes you might think that you are emphasising a topic or an argument, but you are actually putting in a lot of content related to something else. A cloud with larger fond types for the most used words or most used tags, makes the topical distribution/frequency immediately visible. Maybe you have even tagged content with tags you have forgotten: in that focused flow I want to tag and “forget” and keep on writing. But without anywhere to see which tags I have used, I cannot even necessarily search for tags to get all content tagged with a label - because I do not know it exists (my tags are often abbreviations for long philosophical concepts).
Could this be solved by opening a different tool in a new window/tab? There are online tools that let you generate such word clouds - integration possible? Just a thought.
Again - thank you for taking an interest and asking!
All the best,
Elin