I think you're right Mcginn. A ban on books and games may seem like a good idea but it's bound to lead to people nodding off all over the place!!
The no music rule will be a bit of a pain too, a lot of people count the Dinner Party Night of BB2 as one of the best of all, with all the housemates sat around drinking and singing along to Dean's guitar until the wee small hours!
One rule I hope they've left out this year is the discussion of previous BB contestants. I found it very strange, unrealistic and completely unnatural that no-one discussed the previous housemates in the early stages of BB2. They later started to ignore that rule occasionally, but a few were pulled up on it. I can appreciate that the producers want each series to be completely different but there are bound to be contrasts and comparisons made which WOULD make for interesting viewing.