This is a suggestion that takes into account these two suggestions that were already made:
Pages for Pride Dynasty by Msasi (#21461)
Add Next/Previous Arrows In Dynasty by Myr (#188)

Honorable Mentions:
Featured Lions in Pride Dynasties (Now deleted / archived)

This suggestion could be enhanced by both of these features, so go show them some support as well!
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It would be pretty neat to have the ability to have different Caves (referred to as "eras" in this thread) to remember your lions in, allowing the remembrance of different eras of your pride. Maybe you had a fresh restart of your pride and wish to commemorate that era of your time on Lioden, or started a new challenge and wish to house those lions/lionesses in their own cave.

From the exterior, it could work similar to how the hunting parties are structured, with the ability to create parties and add/remove lionesses from those "folders". One of the few adjustments I'd make to this system is to disable the limit, since they aren't hunting and it's just for organizational purposes. From the inside of one of these eras, it could appear as a normal cave. Maybe it could even have CSS capabilities too like regular caves? It'd be a nice way to honor our dead.

I did a quick inspect edit of the Hunting tables as to what I think it could look like. Terminology isn't set in stone of course, but I thought it would be cool to use "Eras", but Dynasties would work as well since it's a term that already exists.


Now to discuss what place the other suggestions have in this one!
Pages for Pride Dynasties doesn't necessarily have a direct influence here since this would help sort out lions anyway, but it could still help to have pages within these caves / eras.

Adding Next/Previous Arrows In Dynasty could work like how they do in our normal pride caves. Selecting one Era would allow you to see these arrows above your cave's name and cycle through the others, with their own featured lions and all.
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Conclusion:
If you have any suggestions, I'd love to hear them! I'm aware that CSS isn't a necessary feature for the ability to sort your dynasties, and I understand if they are removed from the suggestion when being considered. Thank you for your time ♥

Edits:
From Msasi (#21461) - The ability to add a lion into more than one Era, so that you can have that lion dedicated to various different categories such as "Under X King's Rule" and "Lions with X Bases"