While it could be all Luka train that got them there, they still have him so there is no reason why they can't do that again. And I also know that everyone thinks Klay is not a great shooter anymore, but one bad playoff run doesn't make him a bad shooter suddenly, he is the second best shooter ever if you ask me and he is overlooked because he played with the best ever shooter in the history of basketball.
This means that if Klay could shoot even semi decently, like enough that people can't leave him open and if they do he punishes them, then it will be a huge help for them. And while I know people say Klay doesn't defend that well anymore, if he doesn't tire himself out on offense by running around screens, he will have more energy for defense as well.
All things considered they got better and I believe that they are going to end up with another deep run this season. It may not happen, they may lose, Luka Doncic isn't some magical formula where they end up winning every season, but he looks like he found his groove last season and if he can do that well again one more time then they have a chance without a doubt. I just think that we are going to see a bit more troubled result if he starts to play not as good.
This is true, even if Klay doesn't shoot that well, it's a psychological thing where other teams just can't leave him wide open, so it's another player they need to defend, and Luka could find more free room to play, that's all that matters.
Luka is just a very very talented player, he really does super well and I believe that he is going to be MVP soon enough, not saying it will be this season (which it could be) but he is going for that triple double season and may achieve that soon and could take his team to high seeds, in which case he might be given the MVP as well.
This is going to be a tough season for them because expectations are super high, just because they got to finals doesn't mean they will do it again and again, however that is the expectation. If you reach the finals once, people expect you to build the team better and go there again which is hard to achieve, took Celtics so many years but Dallas looks like they are on the right path at least.