Here's some ideas for the game I had:
'Mentor' tab when selecting the leader, medicine cat, or a warrior. One of these cats can mentor a cat in the apprentice category, so when they go out on patrol with their assigned mentor, they might learn that skill when they become warriors.
'Train' tab- this tab would feature near the selection tab patrol or events. It would make a warrior train with another warrior so hopefully the training warrior might learn the mentoring warrior's skill. The mentoring warrior's kit chance for the next moon would lower and their death chance could be increased.
Kit stealing. Rouges/loners and other clans could steal one of your kits which would be really rare. Enemy warrior is randomly featured in the 'Clan' tab going towards a kit. If there's any warrior in camp it would move toward the enemy. The enemy warrior would poof/die when it gets too close.
Elders Idea: Cat gets crippled- they get paralyzed- so said cat cannot be a warrior, but, if said cat got lost a leg, they should still be a warrior, now they would just have a 'Retire' tab when in their profile. Cats at 120 moons should start to have 'Retire' tab, and not become elders until this is clicked. Missing a leg and being older than 120 and still be a warrior, should have a higher death chance on patrols and events.
Rouge raid: Two to five enemy cats enter the camp. Warriors, leader, and deputy would go towards the cats, getting attacked. At about 5-8 seconds, a rouge should be gone, but the cat defending could randomly gain a scar. If the cat keeps getting attacked, they could die at twenty seconds or randomly gain a scar.
Achievements: Random little things so you can get things to customize cats like flowers and vines to the cats or get things to place in camp, like every three deaths you get two bramble thickets that can ki|| enemy cats or can be broken by enemy cats by random. This tab could be under settings possibly in the menu.
Clan editor: Edit the clan camp? You'd be able to get things like rocks, vines, prey items, flowers, and bramble thicket like mentioned above.
Achievement idea #1: you've had 100 six cat patrols.
Achievement idea #2: one cat survives 35 patrols straight, with no other members.