I think it is essential for the housemates to have a weekly task to save them for complete boredom. It must have been awful last year with the piddly tasks they gave them.
Also it gives them a chance to work together and we see them interacting more, rather than completely doing things for themselves.
But Endemol and Channel 4 seem to be living on another planet and I dont hold out much hope of anything like this happening.
Wonder if they have done any research to see what us, the viewers, actually want to see happen on BB. Doubt it.