FFXI had something that sounds similar called the Mog Garden and could give you an idea of what they are doing in 14.
https://www.bg-wiki.com/ffxi/Mog_Garden
It is part of the last expac and is just this chill little area with a small storyline and some nodes you can level up and gather from. As well as spots to garden with but not as in depth as gardening in your mog house is.
You could get some items worth a bit from the max level nodes but the main things are the main mog that is a vendor you can unlock more items on and monster rearing.
https://www.bg-wiki.com/ffxi/Monster_Rearing
This let you take care of some monsters. Goal was to help them grow and be happy which would get you a key item (with some luck) that would unlock an item on the moogle as well as give you some kind of combat boost.
You are only able to have one of these boosts active at a time but some were strong for what they were.
Not likely to have a boost like this in 14 but still some kind of system of things to unlock perhaps?