Does it really matter how long the series is?
We've had CBBs shorter than this with just as many housemates that have been great series, and this series has been really good as well .
If anything I remember that people used to hate how long the Channel 4 BBs were, saying they ran out of steam, got boring and wanted them to be over. 98 days is too long.
I think one series of the German BB lasted a year!