With all the detail going into designing the rides down to the catwalks and ladders, when mechanics are working on fixing or maintaining a ride it would be nice to actually see them scaling the catwalk or accessing the ride on some way.
In the original theme park mechanics put up "under construction" signs around the ride, it was kind of time consuming though.
Mechanics were kind of lame in RCT and I hope all the staff gets improved. Now that we have the station controls added in Alpha 2, maybe this will be possible to see. I really hope we can see security actually chasing/catching vandals.