I've thought of something else that might help explain why BB USA has, unlike our BB, continued to be successful.
(Beyond what
mentioned last night.)
The pace of our UK BB is too slow.
Between nominations and the eviction, days go by without anything that would especially draw viewers or reinvigorate viewers' interest if they're getting bored.
BB USA has Head of House and Power of Veto tasks that affect who might be evicted (and they tend to be better tasks than ours anyway.)
Our BB's shopping tasks are often missable, and (especially in recent years) they often have little effect on food -- and if they do but the HMs on 'basic rations' that just means the HMs spend more time in tedious arguments or moaning and complaining.
When BB UK adds something like bb11's 'Save and Replace', viewers become frustrated and suspicious when it starts producing unpopular results.
BB USA makes sense as a coherent whole that includes no public vote. It doesn't work to add elements of BB USA into BB UK. So what
can BB UK do to pick up the pace?