They kind of broke that "formula" with TP and PH, as PH came out after TP but is a sequel to WW and TP won't be getting a sequel any time soon.

Anyway, they will probably try to make Wii Zelda the best Zelda ever, so it will probably include piggy Ganon.

I think we need a break from Ganon, his appearance in TP felt tacked on. It took away the focus from Zant. I think it would've been better to make Zant stronger and have him be the main baddie.

LA and MM proved that we don't (always) need Ganon to have an epic Zelda game.