[BigBrudder]

CBB was still a decent "hit" in the UK, it was the civilian that really tanked. Endemol consistently (and understandably) refused to accept deals from 5 that only included CBB. But now I believe they would be open to it as a backdoor to a potential return for BB, especially if they feel they have the good faith support of a channel that actually welcomes them and wants them to to succeed. Ultimately BB operates on economies of scale, so an E4 civilian on the main channel with one CBB annually on Ch4 and complementary spinoffs both on E4 would be the ideal goal. The second annual CBB on C5 proved to be greedy overkill and diluted the cache of the series as a whole.

One other thing about the house, the current reality means the rebuilding of a new "house" would not currently need an entire audience and stage area built around it , which made things much more costly and complicated. A more studioesque, soundstage-like UK environment would be simpler and faster to pull off. At one point in the US, producers were seriously considering moving BB to the US Love Island set and shooting it there. There are loads of options if the motivation is there.