I might be a lil late to the party for this one but I really really like the Progress tracker and I wish more games that had a Main Events and Character Events tracker would implement something similar.
The dance of going to each individual character page "Ok did I complete the events for this character?" was a little old when I just wanted to see what was left to do.
Edit: ALSO, being able to click pre-requisite events to quickly go to and find who they're from instead of going through each and every character to find it is so fucking nice.
Two huge QOL things I'd love to see in other games with similar trackers