Although it wasn’t a constant stream of something to look at/do, I enjoyed the line for 7DMT. I took photos of the cottage, and there were some interactive things in line that my kids also liked. I thought it was a great touch to have some things be a “group” event where the more people who participate, the better it gets.
I also like the theming in the lines for Haunted Mansion, Tower of Terror and Winnie the Pooh. I didn’t see Peter Pan’s queue - only used a FP there. As a previous poster mentioned, my group of 10 (including 5 children) absolutely LOVED the queue process for Dumbo and they weren’t ready to leave when it was time. To have a closed in play area where there is only one exit/entrance, a few spots for parents to sit and breathe and the kids to run off excess energy WHILE you wait in line - AWESOME!
Also, the Frozen Ever After line has lots of sweet details & photo ops to look at that make waiting in line somewhat less boring.