I noticed an inconsistency in the titles, but I can't report them in the lesson themselves, so I am doing it here:
When you open Wanting2, the header says Wanting3
I've noticed that also. There are also some other strange inconsistencies, like when you strengthen "Countries" it says that you have strengthened "Commands1" There's at least one other case like that that I can't recall. I think the team is aware of this but it is hard to change until they are able to edit the tree for version 2.0
Yes the wanting 2 and 3 inconsistency will have to wait to Tree 2, the strengthening variation is something that happens when words in one unit also appear in another unit so it considers that unit to be strengthened.