Nintendo loves to throw out how successful they are. So I totally expect numbers to support that Wii Ware is a success followed by announcement of games we already know for Wii Ware, and a surprise Wii Ware announcement.
I could see Nintendo releasing Super Mario All Stars as a Wii Ware Title instead of Virtual Console, with new features added. I don't know what new features, but ideas could include:
1)New Levels,
2)Added Power Ups to some of the games
3)Allowing (Mixing) power ups from many of the games into each other were applicable
4)Level Creation.
Though instead of a complete Mario All Stars this could just be a New Super Mario 3 Wii Ware game.