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Thanks for the comment! Intersting use of the recycle bin. Well for manual archiving you already can simply create a separate section, and move notes there with Shift+F6.
Hi Noah, thanks a lot for your kind words and for a solid idea!
Please take a look here, this is another suggestion of a similar idea which might be a bit easier to implement:
http://roadmap.cintanotes.com/topic/3184-parameterized-tags/
Hi Jeroen, 
Thanks for a great comment. I'd like to ask why you don't consider tags as such inter-note relationships? For example, you could have tags like "Project1", "ProjectMember". So when you wanted to see all members of Project1, you'd simply Ctrl+Click these two tags.
On the other hand, to add 5 project members to the project note, just tag the member-notes with Project1 tag.
Or do I misunderstand your rationale?
Thanks for the elaboration, and for the kind words about CN itself!
I wish you all the best in the New Year, I'll try to make this one wish come true ;)
Oh yes. So very different :) And striving to please everyone is deadly in our business... however this does seem as a greatly demanded feature, and implementing it shouldn't be as hard as e.g. adding spell check or inline todo lists.
Chim, thanks for your great comment! I think approach #2 is the most sane one. While personally I enjoy being able not to enter comma to separate tags, I also can understand users which would rather do it than separate words in tags with underscore or hypen or camelCase.

Since this issue gets a lot of votes I think this issue will be put into the pipeline quite soon. However there are a few features which are ahead.
Hey, seems that this is implemented already! (V2.8.4)