Brazil is going to be hard to beat. a lot of favored teams have big question marks.
Argentina - can they come up big and not be completely dependent on Messi?
Portugal - see above, but with CR7 instead of Messi. Can they find a CB to pair with Dias and have that hold up for a whole tournament?
France - what does the midfield look like without Pogba and Kante?
Germany - was their recent cold patch just a matter of lack of motivation, or was it something more?
England - Center backs and injuries. Can Rice and Bellingham hold up as the only 2 real midfielders for a whole tournament? Who plays at RB/RWB and LB/LWB? Can Southgate get out of his own way and let his players play up to their potential?
Brazil - are they really going with old as dirt Dani Alves and Thiago Silva in their XI?
Spain - they are a mix of old guard and new guard...did they get the mix right and are the young guys ready for the pressure of a WC?
Belgium - Has their window closed on them? Lots of guys who are on the downslope of their prime, if not past it.
Netherlands - Nice mix of youth and experience, but can they score with enough regularlity to win?
USA - Where do the goals come from? Can key players find form when they've been languishing on the bench for club? Are the CBs good enough to go up against the likes of the top teams' front lines?