The Tillers are more than just a faction. Usually, you get exalted with a faction and that’s it.
It is not the case with the Tillers. They are farmers and for what is about 10 of them, you can work your reputation with each one of them.
They will all give you some (mostly cosmetic) improvements to your ranch and/or send you something in the mail.
Here are the 10 characters and what they will give you when you become “best friends”.
Chee Chee: Adds 4 level 90 “Farm Sheep” to Sunsong Ranch. Mails a Goodie Bag containing 20 Windwool Cloth and 5 Exotic Leather.
Ella: Adds a cat to Sunsong Ranch. Mails a Tree Seed Pack containing 3 Blossom Tree seeds.
Farmer Fung: Adds a prized level 90 Yak to Sunsong Ranch. Mails an Enigma Seed.
Fish Fellreed: Adds 3 pink level 90 “Piggys” to Sunsong Ranch. Mails a Special Seed Pack containing several Special Crop seeds.
Gina Mudclaw: Adds a Mailbox to Sunsong Ranch. Mails a Celebration Gift containing fireworks.
Haohan Mudclaw: Adds “Miss Fifi”, a level 86 Mushan to Sunsong Ranch. Mails 3 Songbell Seeds.
Jogu the Drunk: No longer charges to make predictions about tomorrow’s crops. Mails a set of drinks.
Old Hillpaw: Adds “Hillpaw’s Chickens” to Sunsong Ranch. Mails a Straw Hat.
Sho: Adds an orange tree to Sunsong Ranch (which does not grow fruit). Mails a Package containing a Red Cricket.
Tina Mudclaw: Adds furniture to Sunsong Ranch’s hut. Mails you some cooked food.
In addition to the animals listed above, a Dog can be added to the Ranch via a single quest. In the south center of the Heartlands, west of Halfhill, you may find a Lost Dog with a quest. The dog (and quest) first appears at around 13,000/21,000 Revered with The Tillers.
Simply collect 20 Tasty T-Bones from Mushan in the Skyrange, then the dog will run back to Sunsong Ranch as a level 90 “Dog”, and sit patiently next to Farmer Yoon.
Tina Mudclaw’s upgrade adds a stove for cooking, a comfy Pandaren bed, table, and various fittings to your hut. Finally a house one can call one’s own!
Please note, that the reputation you have with each Tiller is independant from the reputation you have with the Tillers. You can perfectly be exalted with the Tillers and still just be an “acquaintance” or even a “stranger” to many of the NPCs listed above.