I'd like to see the return of gadgets. Not DAD Robosuit style, but GE-TND-TWINE style gadgets, such as rappelling devices, disguised lock picks and fingerprint scanners, etc.
I think they tried with the exploding watch in SP. A little generic though welcome, as were the ejector seat and flamethrowers in the car chase. The situations surrounding the gadgets were half assed so not as exciting as the preceding films with gadgetry. I also prefer Bond using his watch remotely to detonate a bomb as opposed to having the watch itself packed with explosives.
As mentioned in another thread, having Bond use his wits to give his Q-branch supplied equipment multiple uses is even better.