I think that Marco's interview last week was an example of when the outdoor interview works really well. It was very enjoyable to watch and the crowd's role was supportive (e.g. whoever shouted that Nadia
was transsexual followed by the look on Marco's face!
).
Where it doesn't work is when the housemate has been editted as a villian or has behaved like one! But with a bit better organisation, surely this could be sorted out. I went to BB2 and BB3 eviction nights, but haven't been recently, so I don't know how they organise it now.
If they are going to continue with outdoor interviews, the crowd need more "management". They need a warm-up act to get them involved and tell them what will happen. They need to be told not to heckle during the interview, and Davina needs to do a little bit of PR on this as well, and say how hard it is to do a good interview if they crowd just keep screaming.
The other thing I have noticed about this year is that the crowd seem very "deep", i.e. the ones at the back are a long way from the stage and won't be able to see very much at all unless they are on the slopey bit. So I think there is even less chance of them seeing much and therefore they're going to be bored!