How to keep track of books that I want to read someday, but haven't acquired yet

[Quuzuu]

I often hear people talking about an interesting book, then I decide I'll read it some day, but not soon. To make sure I remember it, sometimes I immediately acquire it, put it in Calibre, and tag as "want to read". However it's not always practical, because for instance newer editions may come out in the future, or it's very expensive, or the series hasn't finished, etc.

Of course I can keep a list of such books somewhere else, but it'd be nicer to manage everything is Calibre. Any suggestions? I'm thinking maybe I can create an empty book as placeholder?

[BetterRed]

BR