I used my coins on a cradle and a bunch of games. So I have no complaints.
I still think they should boost you to 1500 (or just send you the statue) if you get the 5 2013 Year of Luigi games1 and register them all by a certain date. That'd be Luigi's Mansion 2, New Super Luigi U, Mario and Luigi Dream Team, Super Mario 3D World and Dr Luigi.
1 Yes, I'm aware they extended the Year of Luigi into 2014. I give no f**ks about this.