I would like to see multiple ride operators for coasters, there should be somebody pacing back and forth like they are checking seats (although full animation of seat checking isnt necessary). I have not seen a lot of ride breakdowns in real life, but sometimes rides are shut down for the day. I have seen rides get stuck and usually somebody from maintenance shows up and gets it running again pretty quick. I'm not really sure what they do or why these things happen though. I have also seen older rides have "renovations" which could take months.
For me, I think there should be different levels of "breakdowns"... like if its something small - stuck breaks/restraints - then the mechanic shouldn't need to really do anything but show up to press some buttons. if its something bigger like wear n tear or bent wheels or something (idk) then the ride should be shut down and renovations could be animated where as the mechanic actually "repairs" the cars or track and you have to replace part of the ride. If its something really bad like a crash (I hope) then the ride should be permanently unpopular/unwanted by guests.
I also think ride "inspections" should occur by having a mechanic place a dummy in the train while the mechanic runs tests, but without the ride having to be closed. And it would be cool to see other things like the staircase get used occasionally but its not really all that big of a deal to me. I mainly just want to know that we can have the ability to crash a coaster if we so choose, even if the guests are not "injured", maybe guests will just know not to board a dangerous coaster?
One of the best challenges in RCT was making a bobsled coaster that didnt fly off the track [haha]