I'm Dutch and we are freakishly long, although I do my best to take the average down, but if it comes back with more leg-room in the ride vehicle I will kiss every person who implemented that change (if they are okay with that).
Re-tracking a coaster in a building with themed elements around it. That is a complex job. Then sync up the ride with the dark ride elements, obligatory testing, maybe adding a sparkle farting mummy just to piss off some individuals on this forum (just kidding, or am I) and that is a very short time to do this job.