I have been wanting a new DK for a long time, and I believe the reason we have not seen one for about 10 years is the loss of Rare.
If one were made I would want it to be done by Retro(Graphics and Design), or EAD Tokyo(You can see what they did with mario!!!)
I think to seperate DKWii from Galaxy they should do DK more like SMS or M64.... I think it should be a pure traditional 3d platormer with platforming elements as the main goal(like SMG) and not a collect-a-thon like DK64(Rare was the main culprit here). Although, I would not mind more of an adventure element too(Larger, but fewer worlds, as opposed many smaller, like SMG- I guess this is where it would be more like SMS) it since DK has always had a more "adventurous" !!! BUT !!! I think there is alot they can do with the DK franchise. They could implement the Barrels in an enjoyable way with the WiiMote, and other things such as rope swinging, and like Mario's spin in SMG they could do DK's punch(Forward Thrusting Motion), spin(Same as SMG), pounce(Jump the swing WiiMote down ward), and power slide(While running do foward thrusting motion and press B) easily on the Wii Controls. This would seperate DK from SMG also in that DK relies more on "combat skills".
The game would undouptedly sell buttloads if the production Values are near what what SMG was, DK 64 sold over 5 million, and it was not that great. Nintendo has given the series a well deserved break(there were 4 in 5 years I believe... maybe 6 years....)
psn- tokila
add me, the more the merrier.
