I started my own thread about this. I think it would be quite chaotic to have 10 different types of dance in one show! I quite like the idea of them going back to the dances done in the first four weeks and swapping things over for the next two weeks so that the men dance the female dances and vise versa.
So next week could see the females doing a Waltz or a Cha Cha Cha (dances done by the men in week 1). The men would do either a Salsa or Foxtrot (dances done by the girls in week 2).
Following week would see the females doing a Tango or a Jive (men's week 3 dances) and the men dancing a Rumba or a Quickstep (girl's week 4 dances).
Think this would be a lot better since it would provide a variety of four different dances for each show and would flow more easily than 10 dances!
Then from week 9 they allocate the dances as appropriate for the remaining eight contestants.