Here's an idea to bring back some nostalgia...
Donkey Kong Country 2 Returns
System: Wii
After Tiki Tong's defeat, it seemed like peace has returned to DK Island. However, the nine Tiki leaders managed to survive, and have made a plot to resurrect their boss.
After half a year has passed, the Tiki Tak Tribe strikes back, and they managed to find a way to hypnotize Donkey Kong. With Donkey Kong being a slave to the Tikis, Diddy Kong teams up with Dixie Kong to try to save Donkey Kong, and his Banana Hoard.
The game would be like Donkey Kong Country Returns. However, it does add new elements, along with the return of underwater levels. And of course, players will be able to alternate between using Diddy or Dixie in solo mode. For co-op mode, player 2 controls Dixie. Cranky still runs his shop, like in the prequel.
For the final fight, the Tiki leaders resurrect Tiki Tong, and he possess Donkey Kong for awhile. For the first half of the fight, Diddy and Dixie have to knock out DK himself. The second half, Tiki Tong releases DK, and decides to do all the dirty work himself. However, unlike with the first fight, Tiki Tong adds new attacks to his arsenal.