If Rodgers doesn't like Watson it is possible that he just sucks. Lots of guys are 'great athletes' and never materialize. If he is constantly not where he's supposed to be then I don't blame Rodgers not trusting him. Hopefully that all sorts itself out.
WR is not really a big concern of mine. When you have a great QB it just seems to work itself out over 16-17 games. OL has time to gel. If I had to pick my largest concern, it's the run defense which should be a strength of the team and is consistently getting gashed.
As far as "looking like a contender," again, I ask who does?
Dallas with Cooper Rush? The mass of contenders sitting 2-2? Certainly nobody in the NFC has looked all that amazing and that includes Philadelphia who will eventually run into an opponent that forces Hurts to throw 35 passes. The entire NFC East is sitting 3-1 or 4-0 and do we really think the Giants and Cowboys are better equipped than the Packers? I don't.
This is not to say the Packers will waltz to the Super Bowl but I think the field is very favorable to them. But that's gotten them nowhere. They have to make the playoffs and show up for once. Until they actually make the Super Bowl I'm convinced they'll find a creative way to choke again. But it's not because of some sloppy play in Sept/Oct that has me worried.
Lots of good teams barely squeak by 'crappy' ones. It happens to everybody every year. If you go down the line, fans of most teams will bemoan how close they were, how many games they barely lost, etc. The margins between 6-11 and 11-6 in the NFL are usually pretty thin outside of some awful teams. I mean the Packers could conceivably be 1-3...but they're not.