What else is new? Team USA will just dominate this again. Giannis with the Bucks can't win the championship in the NBA. And his team mates in Greece won't be better than the Bucks. Unless USA won't have their top 5 players on board. KD and Klay are injured. Curry won't probably play. Leonard, PG and Irving will be busy creating chemistry with their new teams. 
You think Popovich is that dumb not to pick good players? This roster of USA for this FIBA 2019 is massive and I know they can ball and penetrate in and out of the court. If there are team that can go head to head with them that's for sure Serbia again or perhaps Spain.Apart from the United States, I regard Serbia and Spain as the only teams that have even an outside chance of winning the tournament. The United States is ahead of the rest of them by a huge margin, and unfortunately this gap is increasing with every passing year. Considering the chances of Greece, I would say that they may consider themselves lucky if they could qualify for the semi-finals. Apart from Giannis Antetokounmpo, I don't find any superstars among them. They couldn't clone Giannis, so they have included his brothers in the team.
China may get involved in a few upsets, but I can't see them progressing much further. Their advantage is that they have been placed in a very weak group, along with Venezuela and Ivory Coast. But they don't figure among the top-16 teams odds list given by the major gambling sites. But who knows, if luck is in their favor, then they can progress during the tournament.
Dont underrate Greece man - I dont think that Spain is stronger than us this year... Yes, after the friendly loss vs Serbia we went down in the FIBA Power Rankings to 5th place but thats not correct...
Sloukas will most likely be able to participate, he is on a good way and a great player.