Yeah I agree that Smith at 3 is tasty especially if Clarke is available. It could be a tough call, but I think I'm dropping all rounder Finch from the XI and opening with Warner and Watson. 3 Smith, 4 Clarke 5 Bailey is excellent and means that we can play Faulkner and Maxwell (with Haddin following) at 6,7,8. The 3 best ODI bowlers in the country are Johnson, Starc and Harris which are quality and also handy bats. Just on Harris, he seems to be getting included in all squads, but he hasn't played an ODI for a long time, so I do hope he'll be fit and has a good World Cup.
For the remainder of the squad Finch deserves a spot, I guess Doherty will get selected, Hazlewood is an excellent bowling option and the last spot is up for grabs and could be either a quick bowler in Cummins, a middle order bat in case Clarke needs rest such as White, an all rounder in Mitch Marsh or I guess a keeper in Ludeman Wade.
David Warner
Shane Watson
Steve Smith
Michael Clarke
George Bailey
James Faulkner
Glenn Maxwell
Brad Haddin
Mitchell Johnson
Mitchell Starc
Ryan Harris
Aaron Finch
Xavier Doherty
Josh Hazlewood
Mitch Marsh