Airport stuff. People rushing into a queue despite already having assigned seats, and particularly the people who stand in the aisle as soon as the seatbelt light goes off once you land, knowing that they're going absolutely nowhere fast.
Urban (ish) stage
Al Green
Beyonce
Chance The Rapper
D'Angelo
Eric B + Rakim
Frank Ocean
Gallant
Heavy D and the Boyz
Ice Cube
Jamie Lidell
Kendrick Lamar
Leon Bridges
Miguel
Nas
Otis Redding
Prince
Q-Tip
The Roots
Stevie Wonder
Temptations
UB40
Vince Staples
Wu-Tang
Xzibit
Young MC
ZZ Top's...
I've always hated the thing, shrouding part of the road in complete darkness and being a giant obstruction. The elevated ring road is similar, but I'd keep that if only because I don't see much of a viable alternative.
Thirded on tearing down the Britannia. Some Brutalist architecture stands up today, but the majority just dominate with an intense ugliness. I'd happily see that and the sports centre flattened, 'iconic' elephant or no.