[Jason.]

I don't even think BB16 is poorly received because it was the 'dull series' (if anything that's BB12) it's unpopular because of its heavy interference and meddling by the production team - the same reason BB15 was poorly received. Although it's subjective really as you can dislike a series for different reasons.

But I don't really think the BB17 format differed all that much from BB15/16 in the same way BB5's format differed from BB1-4. The only thing different in BB17 was that there was no theme and we had more normal nominations but the production was just as diabolical as the previous two series. It only really struck lucky with the casting.