Honestly I don't think Pacers will have this opportunity again next season. Like you guys also mentioned, they won't have Haliburton in the first place because of achilles injury. 
With whom they are going to fill his space? Siakam can't take full responsibility there. He is good but not enough to carry the team by himself. We saw it in the finals while Haliburton was injured.
With whom they are going to fill his space? Siakam can't take full responsibility there. He is good but not enough to carry the team by himself. We saw it in the finals while Haliburton was injured.
Just like what happened when Kawhi left the Raptors before, Siakam alone won't be able to carry his team, now that Hali needs to rest the chance of Indiana to be on the finals again is not that high, though we can't conclude things as we don't know what might be the adjustment or might be trades that may take place when the new season start.
Let see if how they'll be going to perform without Hali leading them in terms of creating plays, not that much with scoring but his presence attract the defense of their opponents which can get a good look for his teammates to advantage making a good look to take the open shots.