This thread has been reassuring. Happy to know that I'm now the only that typically has a dozen or more tins/jars going at a time.
I use small bail jars to store smaller quantities - 2 to 12 oz. I have over 12 of those that I dip into from time to time. Then I have 3 or 4 active tins/jars in my rotation that I smoke from several times weekly. At the moement, that is GL Pease Quiet Nights;English SG Bob's Chocolate Flake an aromatic with burley, Virginias, Latakia and whisky ; Comoy's Cask #4, a Vaper, and Ennerdale, which I sometimes smoke as the final bowl of the day. The key is having one of different blend types available for the variety, rather than having several of the same open, e.g.4 VaPers.
Finally, I have a daily tin. This is usually a new blend to me. I've found smoking a new blend two or three times a day, 7 days a week, helps me understand and appreciate the blend much better than sporadically sampling it among over a month or more.
However, you will come up with your own rotation system over time and that system will evolve as your experience and tastes change. Have fun! The cool thing is there is no right or wrong way to do it.
Pax