Mario Tennis Open had medals and Mario Golf World Tour will likely have medals so it could happen. For Smash Brothers for Wii U you could win medals of all of the characters, stages, items and other Miis.
For games that use the Gamepad expect Mario Party 10, the Wii series and maybe a Mario Golf for Wii U since the gamepad looks like it could be good for that based on that Wii Sports teach demo.
I still think that most games will hardly use the gamepad though.
For games that use the Gamepad expect Mario Party 10, the Wii series and maybe a Mario Golf for Wii U since the gamepad looks like it could be good for that based on that Wii Sports teach demo.
I still think that most games will hardly use the gamepad though.