I'm in NA Club and I didn't find the prizes mediocre at all!
I got a Mario tote bag, two separate Zelda poster sets (Twilight Princess + ALBW set), Mario cards (Gold 2012), and Majora's Mask on Wii. I wanted the SSBU posters, too, but didn't have enough coins.
Right now, I want the Majora's Mask 3D Jigsaw puzzle, the MM3D bag, the Animal Crossing playing cards and the 2016 desk calendar. I only have 475 coins, though, just short of two N64 games :(
I'll wait to see what Gold gets me this year before investing in Wii's port of AlttP and either SB64, MP2 or MK64.