IMO, Miami Heat is still a strong team with Bam dominating the painted area and refining his shooting skills. That pair must not be underestimated yet and they have young players who are playing better and it showed last season.
The lineup is good but it's not enough to win a championship, look how they struggled against a young Celtics. I think Butler is not a superstar that has a championship caliber, well, there's still one season for him to prove the doubters wrong, so they need to win the championship as this could be their last chance.
Well, that's too far from happening because they have not improve their lineup. I don't know but that's what I am seeing the next season, I think it will still be the Warriors or the Lakers (if they'll improved), and it will be the Celtics or the Bucks that's gonna make it to the NBA Finals.
Hard to determine whether who's team will go on finals because many teams upgrade their roosters. We see how Sixers improve their rooster this season so I think they are also a team to be consider unto the finals and there are other more strong teams which for sure surprise us this season that will reach far like what Suns did.
No matter how they'll improve their roster but they don't have the system to win the championship, that's still not gonna work. Warriors had a good system, they also have a big 3 who are experienced enough in the NBA finals and have won a multiple championships together, so I would trust the Warriors here as they will likely win a back to back championship, well, I could be wrong though.