What would make these type event far more compelling is a true individual PVE competition, and a LB that reflected an individual score. Right now the LB only reflects group scores ... a player interested in the thrill of a completion is really playing for 10th instead of 11th place or 50th verse 51st.
At some point the groups have to break ranks if they want to know who really wins number 1 spot ... but there’s no incentive for that. If you could design it to score these events individually while playing in groups, that would force a competition and be far more compelling,