There are features in game that are way to easy.Food for example is one of them.There are also a lot of things you can do to extend your end game, for example build big structures , roads and have fun with zombies.For example, after i finsh my end game base and get bored, i build 100 forges, stast them up, and let the screamers call in zombies to have fun
My opinion about food is simple
We need settlers (A bit like in Fallout but with a Reason and not so poor balanced like in Fallout)
You as player need to supply/feed them.
Plant grow complete different
* if a zombie touch a plant it dies
* Plants need much longer to grow
* Plants give 1 Food + (Playerplants) Chance for a second food + Chance for a seed
* Plants need daylie work, player can produce food for 7 Days per day, Settler can Produce food for 1.5 Days per day
So that finally every settler give a small win each day, but to etablish THE ONE SETTLEMENT a player can have need much love, time and Ressources.
That would be the endgame i hope for.
Btw and please not like in Fallout4
Every settler should have a bed with a crate, and you need to fill the crate with
* A Weapon
* Ammo
* Clothes
* Food
* Water
* Medics
* Money
* Hygienic articles
* Luxory Goods that push the Moral
As long as the crate contains this stuff (Items would be Duped into the not Lootable Settlers, who hate it not to search his settlers to give them something, then better go from bed to bed )
the settler work Decent
One input Crate of the settlement (You can put in Ressources)
One Output crate of the settlement (You can get what your settlement produce)