I enjoyed how they handled the Leaves from the Vine Ba Sing Sei part in the live action show
I actually really enjoyed how they handled Iroh's moments leading up to him breaking down over the loss of his son. Obviously it's something that still haunts him and being in Ba Sing Sei would absolutely bring up all those memories of losing him during the siege.
When he gets to the tree and finally can't hold his emotions anymore it's very poignant, especially after seeing the names of those killed during the siege Iroh led on top of the survivors scarred from the fire nations actions.
I'm also happy they didn't have him sing the song. The Avatar fanbase holds that song in a very revered manner, even to the point that Iroh's current voice actor refuses to sing it because he sees it as solely Mako's song.
The series is far from perfect but I've been enjoying aspects of it and this was one that stood out for me.