I think an item that could speed up default rail travel speed (either independent or multiplicative of default run/sprint speed) could help facilitate additional build diversity for being push oriented or help others get back into battle more quickly, leverage mobility etc. I know there's a rail...
Match 62713 - unfortunately I couldn't get the exact time due to a bug downloading replays, but it was in the last ~10 mins of the game after at least a couple spawns.
The mini boss which is usually in the basement of the center area spawned (or got stuck at some point?) in the upstairs area...