Personally, I really like what Nintendo has been doing and releasing systems with unusual launch lineups...including first party games they would not usually launch with.
This has actually started with the Wii and releasing Zelda: Twilight Princess, but continued with the 3DS having lesser known games.
I would love to see Wii 2 released with Pikmin 3 and F-Zero and re-release compilation game of the best Wii line games with updated graphics. These 3 games plus a lineup of good 3rd party games would make an excellent launch lineup...and would allow Nintendo to keep excitement going by releasing Mario, Star Fox, Mario Kart, ect. later.
For the re-release Wii games: I would make sure ALL of them are 4 player online and offline...with features to allow tournaments and methods for larger parties to play. I would also like to see these games: Bowling, Golf, Tennis, Fencing, Tank, Laser Hockey, Archery (would love this game with a 3rd person battle mode) Target Shooting from Wii Play.