Originally Posted by Granny McSmith:
“Is there a reason, budgetary or otherwise, why this couldn't happen?
I'd really like to know, if anyone can tell me.
I think in most episodes an hour would be better than 45 mins.”
Well, look at it this way.
In a 45 min you actually get about 42 min of footage, after you take out titles, last week, next week and credits.
Of that usually you get something like
Teaser 5 mins
Setup 25
Resolution 10
End scene 2
If you have 60 then again you will actually have something like 57
say
Teaser 8 mins
Setup 35
Resolution 12
End scene 2
Special effects are expensive, as are stunts and location filming (because of things like weather, lighting, closing roads, etc).
So the most likely expansion is going to be more dialogue, probably on set. We've already had complaints that this or that episode seemed 'slow'.
Personally I would think it a good idea to make longer episodes (or as an alternative, to make more 2 parters) - as someone said elsewhere a 2x45 is similar to the old 4x25 format.
The one off episode is all a little too predictable, and somewhat like Star Trek - if you know the way that US ad breaks are timed you can set your watch by them!