They bet so much for Giannis that's why their future mostly depends on the development of Giannis, however if they will be tired and still failing to get in the NBA Finals, I think they can still use Giannis to acquire a another superstar to lead the team and that is by trading him, they just have to ensure that Giannis will remain healthy so his value will not go down.
That's how it is going for him and I think if they can land another good support for him, their team can be competitive not only in the playoffs but finals are possible too. 
. There are still plenty of rooms for improvement or I'd say, 'adjustments'. Who knows that these two might dominate the league later on lol 
. He needs to change his game by practice some new skills cause if he shows the same play in the NBA playoffs this upcoming season he may end up losing the playoffs again and lose their chance to get in the finals.
I'm wondering what sort of changes he does need to make 'bout his gameplay 
. More shots from down town? It just seem that he's already at his peak.