Roy currently 100 not out in the 2nd ODI.
Picking the 5 batting slots (Buttler being the 6th) in the World Cup team is going to be very difficult.
All being well with Bairstow's recovery, there's one too many top 4 players (Roy, Malan, Bairstow, Root, Brook). Think that's the only issue really, 6 needs to be someone who can bowl so even if Stokes doesn't play it's not like they'll put an extra specialist there. Good to see Roy and Malan responding well, going to be even more pressure on the few ODIs in September! By my reckoning 12/15 are nailed on for the WC squad, if Stokes plays there's only two spots left.