I miss the old garden rooms.
I'd sort of like it if they could come back, though I can see that they might be overpowered. So I had an idea:
Make a room. Put an animated tree in there. Call it the room of the 4 seasons.
In winter the tree has bare limbs, no leaves, or fruit.
Spring: The tree changes to show buds, shoots and new light green things growing. Here the room behaves just like the old garden room did -- heals you even when you are starving.
Summer: The tree is covered with deep green leaves. This room will heal you as well, but only if you are full or hungry. Starving people will not heal.
Autumn: The trees' leaves change colour to red and gold. This room will heal you, but only if you are full. Hungry and starving people will not heal.
Winter: The leaves fall off leaving naked tree limbs behind. This room will actively drain you of HP if you enter it.
Then cycle through these for some reasonable amount of time. It means that you can plan a strategy around being able to heal in the middle of it, but you cannot spend hours in there building up an unstoppable high-level character.
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bonus idea: If you zap the tree with a wand of regrowth in the Winter, the season changes to Spring. If you want, you can attack the tree. If you kill it, you get plenty of experience, but the room is permanently a Winter room.