This is supposedly Sarah James' last year, and good job too. It's been more and more pantomime every year since I started watching it.
My suggestions for changes would be:
Ditch Couple's Choice - No sob stories, just clips from the training room.
Ditch Icons and Halloween Week - we don't need yet another fancy dress week with the same songs over again.
Go back to doing half Waltz, half Cha Cha in week 1 and alternate between ballroom and Latin in subsequent weeks.
Argentine Tango not to be performed earlier than week 8 - or have AT week with the remaining couples in quarter finals.
More traditional music instead of Tik Tok tune of the year.
Stop making Neil look stupid in every pro group dance.