1) Royals
2) Team
3) Tennis Court
4) Glory and Gore
Glory & Gore is already top 40 on iTunes so I guess it's inevitable. No use in fighting it.
It may slay iTunes, though I can't see radio playing it. It'd give the listening public the break that Lorde has said she wants to give them from constantly hearing her name everywhere "before she unleashes something different" for the next era.