The second batch of Mario Golf DLC is even better than the first.
http://www.nintendoworldreport.com/review/37518/mario-golf-world-tour-flower-dlc-pack
The second DLC pack for Mario Golf: World Tour raises the stakes. While the Mushroom Pack added two regular, easy courses, the pair of new 18-hole courses in the Flower Pack are more challenging. Layer-Cake Desert, based on Shy Guy Desert from the Nintendo 64 version, is a dessert-themed area with more sand traps than you can shake a stick at. Sparkling Waters, based on Yoshi's Island from the Nintendo 64 version, is a difficult water-logged course with plenty of hazards. The holes are tricky in both, with some rivaling the hardest holes from the regular game. Simply put, if you're looking for a harder round of golf, get this pair of courses right away.

The new Star and Moon Coin Challenges are even more dastardly than they were in the first pack of DLC. They require you to bend these courses to the limits and be extremely precise with your shots. While I'm reaching the point where the high difficulty is getting beyond my skill level, I'm amazed at how devious some of these challenges are. You have to hit the ball out of bounds in the exact perfect spot. Players are challenged to use items in ways they likely never thought possible.
Aside from the two courses, the other piece of this DLC pack is the new playable character, Nabbit. I quite like playing as Nabbit, with his mean draw, goofy animations and clever victory celebrations.
I'm way more impressed with the inventiveness on display in Mario Golf: World Tour's Flower DLC Pack than I was with the first one. The new courses are more interesting and difficult, and the new character is actually worth playing. It seems geared more towards expert golfers, but that doesn't detract from the fun.