Return of the Zen Garden (Suggestion)
As the title states, I would like to have the Zen Garden reintroduced in BfN. It would feature the relaxing Zen Gaden music form the first PvZ game. It could work as a feature for Ops Phase 3. You could collect seeds from playing ops and could plant them in the Zen Garden. These seeds would grow the plants that can be spawned in the pots. Every plant would boost the pot of his type in ops. These boosts would include armor, a small health gain and an increased rate of fire. After being used in one match, the plant in Zen Garden would disappear, just like in PvZ 2.
The zombies could have an equivalent to this. It would be a bot workshop and you would collect machine parts instead of seeds. In the workshop, you could build the bots from ops using the parts.