I really believe the dance off makes sense in the early weeks, maybe up to the start of the two dance stage, so that
1. The judges do get the chance to veto any seriously daft results whereby we lose people with real potential such as Goldie, Gabby and Spoony right at the start just because they haven't got an automatic backing from a typical Strictly voting audience so they don't get any calls. What you could call voter apathy. Whereas, they have serious potential so if they can survive a few early weeks the audience can get to know them a bit any may well start to support them as a result of the talent they have actually shown - and
2. The results show actually has some substance
However, the old arrangement definitely gave Len too much say. In the case of a tie within the judges it should go back to the public vote result.
Also it can't go on too far into the show otherwise the judges start to get to veto actual public preference for one dancer over another which is completely not on.
Oooer - just realised, according to my theory there's not much point in sigining up for the show if your name rhymes with the title, or maybe more realistically, if you make your career as a DJ or mainly on the radio!!!