Amazon Studios wants sitcoms, not hour long. And their page limit is 36 pages I believe :)
I thought it was extreamly well written and had a very good flow to the story. I had a few problems with the features of Hell, simply becaue there is no way you could get that on TV and it's a little sadistic.
The character's names were a little confusing as they were just kind of odd but I suppose it did help to establish that it isn't a normal setting e.g. If the Devil's assitant was called Jeff he probably wouldn't have the same effect on you as a made up or latin name would. Also you learn characters names as you watch more episodes so that's not a problem really.
The story I have pretty much no problem with, I read the whole thing all the way through and really enjoyed it.
One question; it's 31 pages long. In production one page of a script is typically one minute so for and hour long television episode you want your script to be around 39-43 pages long. So are you planning on selling it? Because you may have a small problem with the length of it.
Good luck anyway, it's a very good script.