A cooldown for lioness instead of a cooldown for hunting.
We were given a lot of territory, but not enough training options to keep so many lioness!

So after your lioness came back after 15 minutes, they will have a cooldown of an hour before they can hunt again.
That means, that after 15 minutes, you'd be able to send OTHER lioness out for hunting. When they get back, they need to cooldown for an hour.
If you do the math, that means we could keep 4 teams of 5 lioness if you want a constant rotation. That would mean 25 lioness kept on a regular base - a lot more then 5-7 lioness I see most people keeping.

I think it could help solve the cub-problem. People can't really keep a lot of lioness, since hunting in the only way we can train them. All the others ... just sit there. This way, having more territory makes sense if we can send more lioness out. And at the same time, you still have your 1-hour cooldown. You can't train the same lioness more then you do now, you just train more lioness, not just the same ones.

Would it make the food too cheap?
NOPE! The food has a sort of minimum value, thanks to the monkey business! And - if people keep more lions, they'll need more food too. The number of lioness should go up equally with the food.

I see more people then just me keeping only 5 lioness, and selling all the others because we just can't do anything with them. So logically, a lot of people will suddenly use a lot more food too. So, food keeps it value.

Feel free to give feedback.