Well I'm assuming that these doors are the only ones open, so what's wrong with allowing the player to go up that far? It's not like there's anywhere else to go anyway.
This particular elevator shaft is unique in that it has doors with glass in them.
The debris could very well be the reason why the elevator is disabled, instead of having a random elevator that is disabled for no apparent reason.
I like this.
I won't touch hammer this morning, but so far it's WC's idea and this.
EDIT: So, I'm working on it, but I had the ladder in the middle of the shaft side. Only one phrase can sum the results of this up:
Warning, user death iminent.Too hard to get over there without falling repeatedly, so I'm moving it further towards the door. Wish me luck.