This was my idea from ages ago:
http://forum.digitalspy.co.uk/board/...d.php?t=275394
This is a bit complicated but here goes:
As usual HM's go up steps into house go through the double-doors and are immediately are faced with two doors. Only one is unlocked so obviously they go through that one. The next HM goes in and the OTHER door is unlocked and it alternates like this until all HM's are inside. Through one door is just a hallway then through one more door and then enter the house on the upper floor .Through the other door they go down some steps and through a door and enter then house on the lower floor.
Both floors are exactly the same in terms of layout. Colour scheme however is different so viewers don't get mixed up.
Garden - Both have a garden. Lower floor has the original garden while upper flor have a roof-top garden, With a wall to 1. Stop them falling off and 2. to stop them having contact with lower floor and outside world.
Diary Room - Upper floor's DR is directly above Lower Floor's. Chair is a truely vulgar primrose yellow colour on upper floor and equally as distasteful luminous green on lower floor.
As soon as everyone is in both floors are made aware of each other through plasma screen. They will now compete against each other through tasks. The losing floor's HM's are all up for eviction. This means tasks will be taken seriously. Nominations are not applicable in early weeks.
On the first night on one HM from each floor is called to DR they are now working for BB for the rest of their time in the House. They will be able to watch clips of bitching sessions in DR but their main job is to sabotage their own floor's chances at winning their task to escape being up for eviction. No matter what happens the 'moles' cannot be evicted as public will not get to vote for them although other HM's are blissfully unaware of this. The two moles can talk to each other through videolink in the DR.
Shopping budget - always £10 per person per day. Alcohol supplied at BB's discretion but will be on a very regular basis as when HM's are bladdered they are at their most entertaining. HM's can bring in 700 cigarettes if they smoke. (10 a day for 70 days). BB will not supply any extra.
At halfway stage: Both floors are merged. HM's will spend alternate weeks in upper/lower floor. the two moles then go head to head in public vote. One leaves. Other HM's will not know why those particular HM's were up for eviction. The surviving mole continues to work for BB causing havoc. Nominations then come into play. Major rule change - Nominations are allowed to be discussed.
Final Night - The mole is informed for the first time that they are not eligable to win the prize money of £1million. Only 3 on final night can possibly win.