He does not need to wait until 85 to see this. He is seeing it now already.
I am about month old player at level 63 and I am lucky to get to middle of GW field. Yesterday I was lucky to get level 65 Phoenix team at second node.
And just wait until you meet some jacked up character that will destroy your multiple teams.
Few days ago I lost 8 teams to Nihilus (or whatever his name is) without ever getting his protection down.
After all was done I checked him out and he has 18k HP and 17k protection and 12k power index.
My best team has about 27k combined among 5 characters so I am not sure how are they scaling this event as he had company which included purpled out Vader.
Enfys is another one that can solo all of your characters.